| 1 | CREATE TABLE Role
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| 2 | (
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| 3 | role_id SERIAL PRIMARY KEY,
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| 4 | role_name VARCHAR(50) NOT NULL UNIQUE
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| 5 | );
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| 6 |
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| 7 | CREATE TABLE Currency
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| 8 | (
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| 9 | currency_id SERIAL PRIMARY KEY,
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| 10 | code VARCHAR(10) NOT NULL UNIQUE,
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| 11 | name VARCHAR(50) NOT NULL
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| 12 |
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| 13 | );
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| 14 |
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| 15 | CREATE TABLE Employee
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| 16 | (
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| 17 | employee_id SERIAL PRIMARY KEY,
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| 18 | first_name VARCHAR(50) NOT NULL DEFAULT 'UNKNOWN',
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| 19 | last_name VARCHAR(50) NOT NULL DEFAULT 'UNKNOWN',
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| 20 | position VARCHAR(50),
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| 21 | hire_date DATE DEFAULT CURRENT_DATE
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| 22 | );
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| 23 |
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| 24 | CREATE TABLE Branch
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| 25 | (
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| 26 | branch_id SERIAL PRIMARY KEY,
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| 27 | branch_name VARCHAR(100) NOT NULL,
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| 28 | address VARCHAR(255),
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| 29 | city VARCHAR(50)
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| 30 | );
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| 31 |
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| 32 | CREATE TABLE Client
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| 33 | (
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| 34 | client_id SERIAL PRIMARY KEY,
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| 35 | first_name VARCHAR(50) NOT NULL DEFAULT 'UNKNOWN',
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| 36 | last_name VARCHAR(50) NOT NULL DEFAULT 'UNKNOWN',
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| 37 | embg VARCHAR(130) UNIQUE,
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| 38 | phone VARCHAR(20),
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| 39 | email VARCHAR(100) UNIQUE,
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| 40 | address VARCHAR(255),
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| 41 | status VARCHAR(20) DEFAULT 'ACTIVE',
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| 42 | date_registered DATE DEFAULT CURRENT_DATE,
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| 43 | branch_id INT,
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| 44 | CONSTRAINT chk_client_status
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| 45 | CHECK (status IN ('ACTIVE', 'INACTIVE', 'BLOCKED')),
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| 46 | CONSTRAINT chk_client_email
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| 47 | CHECK (email ~* '^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$'),
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| 48 | CONSTRAINT chk_client_phone
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| 49 | CHECK (phone ~ '^\+?[0-9]{7,15}$'),
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| 50 | FOREIGN KEY (branch_id) REFERENCES Branch (branch_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 51 | );
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| 52 |
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| 53 | CREATE TABLE Client_user
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| 54 | (
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| 55 | client_user_id SERIAL PRIMARY KEY,
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| 56 | username VARCHAR(50) NOT NULL UNIQUE,
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| 57 | password_hash VARCHAR(255) NOT NULL,
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| 58 | last_login TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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| 59 | status VARCHAR(20) DEFAULT 'ACTIVE',
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| 60 | client_id INT NOT NULL,
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| 61 | CONSTRAINT chk_client_user_status
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| 62 | CHECK (status IN ('ACTIVE', 'LOCKED', 'DISABLED')),
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| 63 | CONSTRAINT chk_password_hash_length
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| 64 | CHECK (length(password_hash) >= 60),
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| 65 | CONSTRAINT chk_password
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| 66 | CHECK (
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| 67 | password_hash LIKE '$2a$%' OR
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| 68 | password_hash LIKE '$2b$%' OR
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| 69 | password_hash LIKE '$2y$%'
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| 70 | ),
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| 71 | FOREIGN KEY (client_id) REFERENCES Client (client_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 72 | );
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| 73 |
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| 74 | CREATE TABLE Loan
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| 75 | (
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| 76 | loan_id SERIAL PRIMARY KEY,
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| 77 | loan_type VARCHAR(20) NOT NULL,
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| 78 | amount DECIMAL(15, 2) NOT NULL CHECK (amount > 0),
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| 79 | interest_rate DECIMAL(5, 2) NOT NULL CHECK (interest_rate >= 0),
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| 80 | start_date DATE NOT NULL,
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| 81 | end_date DATE,
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| 82 | status VARCHAR(20) DEFAULT 'PENDING',
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| 83 | approved_date DATE,
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| 84 | client_id INT NOT NULL,
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| 85 | employee_id INT,
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| 86 | CONSTRAINT chk_loan_status
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| 87 | CHECK (status IN ('PENDING', 'APPROVED', 'REJECTED', 'CLOSED')),
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| 88 | CONSTRAINT chk_loan_dates
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| 89 | CHECK (end_date IS NULL OR end_date > start_date),
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| 90 | CONSTRAINT chk_interest_range
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| 91 | CHECK (interest_rate BETWEEN 0 AND 100),
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| 92 | CONSTRAINT chek_status
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| 93 | CHECK ((status = 'APPROVED' AND approved_date IS NOT NULL) OR (status <> 'APPROVED')),
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| 94 | FOREIGN KEY (client_id) REFERENCES Client (client_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 95 | FOREIGN KEY (employee_id) REFERENCES Employee (employee_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 96 | );
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| 97 |
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| 98 | CREATE TABLE Account
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| 99 | (
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| 100 | account_id SERIAL PRIMARY KEY,
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| 101 | account_number VARCHAR(30) NOT NULL UNIQUE,
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| 102 | account_type VARCHAR(20) NOT NULL,
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| 103 | balance DECIMAL(20, 2) DEFAULT 0,
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| 104 | currency_id INT,
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| 105 | open_date DATE DEFAULT CURRENT_DATE,
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| 106 | status VARCHAR(20) DEFAULT 'ACTIVE',
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| 107 | client_id INT NOT NULL,
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| 108 | client_user_id INT,
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| 109 | loan_id INT,
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| 110 | branch_id INT NOT NULL,
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| 111 | CONSTRAINT chk_account_status
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| 112 | CHECK (status IN ('ACTIVE', 'CLOSED', 'BLOCKED')),
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| 113 | CONSTRAINT chk_balance_positive
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| 114 | CHECK (balance >= 0),
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| 115 | CONSTRAINT chk_account_type
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| 116 | CHECK (account_type IN ('SAVINGS', 'CHECKING', 'CREDIT', 'LOAN', 'INVESTMENT')),
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| 117 | FOREIGN KEY (client_id) REFERENCES Client (client_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 118 | FOREIGN KEY (client_user_id) REFERENCES Client_user (client_user_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 119 | FOREIGN KEY (loan_id) REFERENCES Loan (loan_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 120 | FOREIGN KEY (currency_id) REFERENCES Currency (currency_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 121 | FOREIGN KEY (branch_id) REFERENCES Branch (branch_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 122 | );
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| 123 |
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| 124 | CREATE TABLE SavingsAccount
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| 125 | (
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| 126 | account_id INT PRIMARY KEY REFERENCES Account (account_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 127 | interest_rate DECIMAL(5, 2) NOT NULL CHECK (interest_rate BETWEEN 0 AND 100),
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| 128 | interest_period VARCHAR(20) NOT NULL CHECK (interest_period IN ('DAILY', 'MONTHLY', 'YEARLY')),
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| 129 | minimum_balance DECIMAL(20, 2) DEFAULT 0 CHECK (minimum_balance >= 0),
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| 130 | capitalization_type VARCHAR(20) NOT NULL CHECK (capitalization_type IN ('SIMPLE', 'COMPOUND'))
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| 131 | );
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| 132 |
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| 133 | CREATE TABLE Loan_installment
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| 134 | (
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| 135 | installment_id SERIAL PRIMARY KEY,
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| 136 | installment_number INT NOT NULL,
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| 137 | due_date DATE NOT NULL,
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| 138 | amount DECIMAL(15, 2) NOT NULL CHECK (amount > 0),
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| 139 | status VARCHAR(20),
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| 140 | paid_date DATE,
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| 141 | loan_id INT NOT NULL,
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| 142 | CONSTRAINT chk_installment_status
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| 143 | CHECK (status IN ('PENDING', 'PAID', 'LATE')),
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| 144 | CONSTRAINT uq_installment_per_loan
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| 145 | UNIQUE (installment_number, loan_id),
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| 146 | FOREIGN KEY (loan_id) REFERENCES Loan (loan_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 147 | );
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| 148 |
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| 149 | CREATE TABLE Collateral
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| 150 | (
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| 151 | collateral_id SERIAL PRIMARY KEY,
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| 152 | type VARCHAR(30) NOT NULL,
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| 153 | description VARCHAR(255),
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| 154 | value DECIMAL(15, 2) NOT NULL,
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| 155 | status VARCHAR(20),
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| 156 | date_added DATE DEFAULT CURRENT_DATE,
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| 157 | loan_id INT NOT NULL,
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| 158 | client_id INT NOT NULL,
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| 159 |
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| 160 | CONSTRAINT chk_collateral_value
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| 161 | CHECK (value >= 0),
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| 162 |
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| 163 | CONSTRAINT chk_collateral_status
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| 164 | CHECK (status IN ('ACTIVE', 'RELEASED', 'PLEDGED', 'DEFAULTED')),
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| 165 |
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| 166 | FOREIGN KEY (loan_id) REFERENCES Loan (loan_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 167 | FOREIGN KEY (client_id) REFERENCES Client (client_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 168 | );
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| 169 |
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| 170 | CREATE TABLE Transaction_type
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| 171 | (
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| 172 | transaction_type_id SERIAL PRIMARY KEY,
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| 173 | type_name VARCHAR(30) NOT NULL,
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| 174 | description VARCHAR(225),
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| 175 | CHECK (type_name IN ('DEPOSIT', 'WITHDRAWAL', 'TRANSFER', 'PAYMENT', 'FEE', 'INTEREST', 'REFUND', 'LOAN_PAYMENT',
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| 176 | 'CURRENCY_EXCHANGE'))
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| 177 | );
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| 178 |
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| 179 | CREATE TABLE Payment_method
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| 180 | (
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| 181 | method_id SERIAL PRIMARY KEY,
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| 182 | method_name VARCHAR(30) NOT NULL,
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| 183 | description VARCHAR(225),
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| 184 | CONSTRAINT chk_payment_method
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| 185 | CHECK (method_name IN ('CASH', 'DEBIT_CARD', 'CREDIT_CARD', 'BANK_TRANSFER', 'MOBILE_PAYMENT', 'CHECK'))
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| 186 | );
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| 187 |
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| 188 | CREATE TABLE Counter
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| 189 | (
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| 190 | counter_id SERIAL PRIMARY KEY,
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| 191 | counter_number INT NOT NULL,
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| 192 | status VARCHAR(20),
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| 193 | branch_id INT NOT NULL,
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| 194 | CONSTRAINT chk_counter_status
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| 195 | CHECK (status IN ('OPEN', 'CLOSED', 'MAINTENANCE')),
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| 196 | CONSTRAINT uq_counter_per_branch
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| 197 | UNIQUE (counter_number, branch_id),
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| 198 | FOREIGN KEY (branch_id) REFERENCES Branch (branch_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 199 | );
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| 200 |
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| 201 | CREATE TABLE Branch_employee
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| 202 | (
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| 203 | emp_branch_id SERIAL PRIMARY KEY,
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| 204 | branch_id INT NOT NULL,
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| 205 | employee_id INT NOT NULL,
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| 206 | start_date DATE DEFAULT CURRENT_DATE,
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| 207 | end_date DATE,
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| 208 | status VARCHAR(20) DEFAULT 'ACTIVE',
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| 209 | CONSTRAINT chk_branch_employee_dates
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| 210 | CHECK (end_date IS NULL OR end_date > start_date),
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| 211 | CONSTRAINT chk_branch_employee_status
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| 212 | CHECK (status IN ('ACTIVE', 'INACTIVE', 'SUSPENDED', 'TEMPORARY_ASSIGNMENT')),
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| 213 | FOREIGN KEY (branch_id) REFERENCES Branch (branch_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 214 | FOREIGN KEY (employee_id) REFERENCES Employee (employee_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 215 | );
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| 216 |
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| 217 | CREATE TABLE Employee_counter
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| 218 | (
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| 219 | emp_counter_id SERIAL PRIMARY KEY,
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| 220 | start_shift TIMESTAMP NOT NULL,
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| 221 | end_shift TIMESTAMP,
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| 222 | employee_id INT NOT NULL,
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| 223 | counter_id INT NOT NULL,
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| 224 | CONSTRAINT chk_shift_dates
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| 225 | CHECK (end_shift IS NULL OR end_shift > start_shift),
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| 226 | FOREIGN KEY (employee_id) REFERENCES Employee (employee_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 227 | FOREIGN KEY (counter_id) REFERENCES Counter (counter_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 228 | );
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| 229 |
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| 230 | CREATE TABLE Transaction
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| 231 | (
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| 232 | transaction_id SERIAL PRIMARY KEY,
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| 233 | amount DECIMAL(20, 2) NOT NULL CHECK (amount > 0),
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| 234 | transaction_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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| 235 | status VARCHAR(20) DEFAULT 'PENDING',
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| 236 | description VARCHAR(225),
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| 237 | reference_number VARCHAR(30) UNIQUE,
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| 238 | account_id INT NOT NULL,
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| 239 | account_id2 INT,
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| 240 | transaction_type_id INT,
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| 241 | payment_method_id INT,
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| 242 | currency_id INT,
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| 243 | currency_id2 INT,
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| 244 | installment_id INT,
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| 245 | emp_counter_id INT,
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| 246 | loan_id INT,
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| 247 | CONSTRAINT chk_transaction_status
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| 248 | CHECK (status IN ('PENDING', 'COMPLETED', 'FAILED', 'CANCELLED')),
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| 249 | CONSTRAINT chk_transfer_logic
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| 250 | CHECK (account_id2 IS NULL OR account_id <> account_id2),
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| 251 | FOREIGN KEY (account_id) REFERENCES Account (account_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 252 | FOREIGN KEY (account_id2) REFERENCES Account (account_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 253 | FOREIGN KEY (transaction_type_id) REFERENCES Transaction_type (transaction_type_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 254 | FOREIGN KEY (payment_method_id) REFERENCES Payment_method (method_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 255 | FOREIGN KEY (currency_id) REFERENCES Currency (currency_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 256 | FOREIGN KEY (currency_id2) REFERENCES Currency (currency_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 257 | FOREIGN KEY (installment_id) REFERENCES Loan_installment (installment_id) ON DELETE SET NULL ON UPDATE CASCADE,
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| 258 | FOREIGN KEY (emp_counter_id) REFERENCES Employee_counter (emp_counter_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 259 | FOREIGN KEY (loan_id) REFERENCES Loan (loan_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 260 | );
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| 261 |
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| 262 | CREATE TABLE Receipt
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| 263 | (
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| 264 | receipt_id SERIAL PRIMARY KEY,
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| 265 | print_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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| 266 | receipt_number VARCHAR(30) NOT NULL UNIQUE,
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| 267 | transaction_id INT NOT NULL UNIQUE,
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| 268 | FOREIGN KEY (transaction_id) REFERENCES Transaction (transaction_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 269 | );
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| 270 |
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| 271 | CREATE TABLE Daily_report
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| 272 | (
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| 273 | report_id SERIAL PRIMARY KEY,
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| 274 | report_date DATE NOT NULL,
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| 275 | total_transactions INT NOT NULL DEFAULT 0,
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| 276 | total_amount DECIMAL(20, 2) NOT NULL DEFAULT 0.00,
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| 277 | branch_id INT NOT NULL,
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| 278 | FOREIGN KEY (branch_id) REFERENCES Branch (branch_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 279 | );
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| 280 |
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| 281 | CREATE TABLE Exchange_rate
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| 282 | (
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| 283 | rate_id SERIAL PRIMARY KEY,
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| 284 | rate DECIMAL(15, 6) NOT NULL CHECK (rate > 0),
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| 285 | date_updated DATE DEFAULT CURRENT_DATE,
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| 286 | currency_id INT NOT NULL,
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| 287 | CONSTRAINT uq_currency_date
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| 288 | UNIQUE (currency_id, date_updated),
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| 289 | FOREIGN KEY (currency_id) REFERENCES Currency (currency_id) ON DELETE RESTRICT ON UPDATE CASCADE
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| 290 | );
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| 291 |
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| 292 | CREATE TABLE Bank_user
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| 293 | (
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| 294 | user_id SERIAL PRIMARY KEY,
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| 295 | username VARCHAR(50) NOT NULL UNIQUE,
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| 296 | password_hash VARCHAR(255) NOT NULL,
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| 297 | role_id INT NOT NULL,
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| 298 | employee_id INT NOT NULL,
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| 299 | CONSTRAINT chk_password_hash_length
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| 300 | CHECK (length(password_hash) >= 60),
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| 301 | CONSTRAINT chk_password
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| 302 | CHECK (
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| 303 | password_hash LIKE '$2a$%' OR
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| 304 | password_hash LIKE '$2b$%' OR
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| 305 | password_hash LIKE '$2y$%'
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| 306 | ),
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| 307 | FOREIGN KEY (role_id) REFERENCES Role (role_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 308 | FOREIGN KEY (employee_id) REFERENCES Employee (employee_id) ON DELETE CASCADE ON UPDATE CASCADE
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| 309 | );
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| 310 |
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| 311 | CREATE TABLE InterestPayment
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| 312 | (
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| 313 | interest_payment_id SERIAL PRIMARY KEY,
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| 314 | amount DECIMAL(15, 2) NOT NULL CHECK (amount > 0),
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| 315 | payment_date DATE NOT NULL DEFAULT CURRENT_DATE,
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| 316 | period_start DATE NOT NULL,
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| 317 | period_end DATE NOT NULL,
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| 318 | account_id INT NOT NULL,
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| 319 | transaction_id INT NOT NULL,
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| 320 | FOREIGN KEY (transaction_id) REFERENCES Transaction (transaction_id) ON DELETE RESTRICT ON UPDATE CASCADE,
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| 321 | FOREIGN KEY (account_id) REFERENCES Account (account_id) ON DELETE CASCADE ON UPDATE CASCADE,
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| 322 | CONSTRAINT chk_period_dates CHECK (period_end >= period_start)
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| 323 | ); |
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