Нормализација и подобрување на дизајн
Содржина
- Определување функционални зависности
- Проблеми и подобрување на дизајн
Определување функционални зависности
R = {user_id, user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_id, city_name, region_id, region_name, cust_EDB, cust_company_name, cust_adr, cust_representative_img, wh_id, wh_adr, veh_id, veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin,veh_reg_date, ctg_id, ctg_name, man_id, man_name, man_adr, man_mobile, man_email, art_id, art_name, art_image, art_weight, price_id, price, price_eff_date, pf_id, pf_deadline, pf_date_created, pf_status_id, pf_status_name, pf_status_desc, del_id, del_date_created, del_date, del_start_km, del_end_km, del_start_time, del_end_time, d_status_id, d_status_name, d_status_desc, ord_id, ord_date, ord_sum, ord_fulfillment_date, ord_comment, o_status_id, o_status_name, o_status_desc, unit_id, unit_expiration_date, unit_serial_number, unit_batch_number, unit_manufacture_date, unit_cost_price, day_id, day_name, cust_day_id, start_time, end_time, t_id, t_value, t_date, t_type, t_expiry, t_validated_at, t_user, img_id, img_path, img_ent_type, img_ent_id}
Функционални зависности
Users
user_id → user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_id
Customer го проширува User
user_id → cust_EDB, cust_company_name, cust_adr, cust_representative_img (каде што clazz_ = 'customer')
Manager го проширува User
user_id → wh_id (каде што clazz_ = 'manager')
Driver го проширува User
user_id → veh_id (каде што clazz_ = 'driver')
City
city_id → city_name, region_id
Region
region_id → region_name
Warehouse
wh_id → wh_adr, city_id
Vehicle
veh_id → veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin, veh_reg_date, wh_id
Categories
ctg_id → ctg_name
Manufacturer
man_id → man_name, man_adr, man_mobile, man_email
Article
art_id → art_name, art_image, art_weight, ctg_id, man_id
Price
price_id → price, price_eff_date, art_id
Pro forma
pf_id → pf_deadline, pf_date_created, pf_status_id
Pro Forma Status
pf_status_id → pf_status_name, pf_status_desc
Delivery
del_id → del_date_created, del_date, del_start_km, del_end_km, del_start_time, del_end_time, d_status_id, veh_id
Delivery Status
d_status_id → d_status_name, d_status_desc
Order
ord_id → ord_date, ord_sum, ord_fulfillment_date, ord_comment, o_status_id, cust_id, del_id, pf_id
Delivery Status
o_status_id → o_status_name, o_status_desc
Article unit
unit_id → unit_expiration_date, unit_serial_number, unit_batch_number, unit_manufacture_date, unit_cost_price, wh_id, ord_id
Weekday
day_id → day_name
Customer weekday
cust_day_id → cust_id, day_id, start_time, end_time
Token
t_id → t_value, t_date, t_type, t_expiry, t_validated_at, t_user
Image store
img_id → img_path, img_ent_type, img_ent_id
Класификација на атрибути
Лево - атрибути кои одредуваат други
cust_day_id, price_id, pf_id, del_id, ord_id, unit_id, t_id, img_id
Лево и десно - атрибути кои одредуваат други и се одредени од други
user_id, city_id, region_id, wh_id, veh_id, ctg_id, man_id, art_id, d_status_id, o_status_id, pf_status_id, day_id
Десно - атрибути кои се одредени од други
user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_name, region_name, cust_EDB, cust_company_name, cust_adr, cust_representative_img, wh_adr, veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin, veh_reg_date, ctg_name, man_name, man_adr, man_mobile, man_email, art_name, art_image, art_weight, price, price_eff_date, pf_deadline, pf_date_created, pf_status_name, pf_status_desc, del_date_created, del_date, del_start_km, del_end_km, del_start_time, del_end_time, d_status_name, d_status_desc, ord_date, ord_sum, ord_fulfillment_date, ord_comment, o_status_name, o_status_desc, unit_expiration_date, unit_serial_number, unit_batch_number, unit_manufacture_date, unit_cost_price, day_name, start_time, end_time, t_value, t_date, t_type, t_expiry, t_validated_at, t_user, img_path, img_ent_type, img_ent_id
Покривачи на примарните клучеви
Vehicle
veh_id+ = {veh_id, veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin, veh_reg_date, wh_id, wh_adr, city_id, city_name, region_id, region_name}
User
user_id+ = {user_id, user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_id, city_name, region_id, region_name}
- Ако тип на корисник е 'customer':
user_id+ += {cust_EDB, cust_company_name, cust_adr, cust_representative_img}
- Ако тип на корисник е 'manager':
user_id+ += {wh_id, wh_adr}
- Ако тип на корисник е 'driver':
user_id+ += {veh_id, veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin, veh_reg_date, wh_id, wh_adr}
Manufacturer
man_id+ = {man_id, man_name, man_adr, man_mobile, man_email}
Article
art_id+ = {art_id, art_name, art_image, art_weight, ctg_id, ctg_name, man_id, man_name, man_adr, man_mobile, man_email}
Price
price_id+ = {price_id, price, price_eff_date, art_id, art_name, art_image, art_weight, ctg_id, ctg_name, man_id, man_name, man_adr, man_mobile, man_email}
Pro-forma
pf_id+ = {pf_id, pf_deadline, pf_date_created, pf_status_id, pf_status_name, pf_status_desc}
Delivery
del_id+ = {del_id, del_date_created, del_date, del_start_km, del_end_km, del_start_time, del_end_time, d_status_id, d_status_name, d_status_desc, veh_id, veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin, veh_reg_date, wh_id, wh_adr, city_id, city_name, region_id, region_name}
Order
ord_id+ = {ord_id, ord_date, ord_sum, ord_fulfillment_date, ord_comment, o_status_id, o_status_name, o_status_desc, cust_id, del_id, pf_id, user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_id, cust_EDB, cust_company_name, cust_adr, cust_representative_img, city_name, region_id, region_name, del_date_created, del_date, del_start_km, del_end_km, del_start_time, del_end_time, d_status_id, veh_id, d_status_name, d_status_desc, veh_carry_weight, veh_service_interval, veh_kilometers, veh_last_service, veh_last_service_km, veh_plate, veh_vin, veh_reg_date, wh_id, wh_adr,pf_deadline, pf_date_created, pf_status_id, pf_status_name, pf_status_desc}
Article Unit
unit_id+ = {unit_id, unit_expiration_date, unit_serial_number, unit_batch_number, unit_manufacture_date, unit_cost_price, wh_id, wh_adr, city_id, city_name, region_id, region_name, ord_id}
- Ако ord_id не е null, исто така ги вклучува и:
unit_id+ += {ord_date, ord_sum, ord_fulfillment_date, ord_comment, o_status_id, o_status_name, o_status_desc, cust_id, del_id, pf_id,
и сите атрибути одредени од ord_id
}
Композитен клуч - Article Unit и Price
(unit_id, price_id)+ = {unit_id, price_id,
Сите атрибути определни од unit_id
unit_expiration_date, unit_serial_number, unit_batch_number, unit_manufacture_date, unit_cost_price, wh_id, ord_id,
Сите атрибути определни од price_id
price, price_eff_date, art_id,
Сите транзитивни атрибути
wh_adr, city_id, city_name, region_id, region_name, art_name, art_image, art_weight, ctg_id, man_id, ctg_name, man_name, man_adr, man_mobile, man_email}
Weekday
cust_day_id+ = {cust_day_id, cust_id, day_id, start_time, end_time,
Од day_id:
day_name,
Од cust_id:
user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_id, cust_EDB, cust_company_name, cust_adr, cust_representative_img,
Од city_id:
city_name, region_id, region_name}
Token
t_id+ = {t_id, t_value, t_date, t_type, t_expiry, t_validated_at, t_user,
Од t_user (кое е user_id):
user_name, user_surname, user_pass, user_salt, user_email, user_mobile, user_active, user_image, clazz_, user_role, city_id,
Од city_id:
city_name, region_id, region_name}
Image Store
img_id+ = {img_id, img_path, img_ent_type, img_ent_id}
Анализа според покривачи
Од анализирање на покривачите може да ги забележиме следните проблеми во нормализацијата на базата:
- Транзитивни зависности во податоците за возила:
veh_id → veh_last_service, veh_last_service_km - Недостига зависноста
(ord_id, art_id) → quantity, price - Историја на цени и вредност -
unit_id → unit_cost_price - Поврзување на слики:
img_id → img_ent_type, img_ent_id
