Joined primary key : Add Primary Key « Constraints « Oracle PL / SQL

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Oracle PL / SQL » Constraints » Add Primary Key 
Joined primary key
  


SQL> CREATE TABLE store (
  2    store_id VARCHAR2(12CONSTRAINT store_pk PRIMARY KEY,
  3    store_name VARCHAR2(15),
  4    city VARCHAR2(25),
  5    state VARCHAR2(2),
  6    region VARCHAR2(2),
  7    zip VARCHAR2(5));

Table created.

SQL>
SQL> CREATE TABLE pc (
  2    pc_id VARCHAR2(12CONSTRAINT prod_pk PRIMARY KEY,
  3    prod_desc VARCHAR2(15),
  4    upc NUMBER,
  5    brand VARCHAR2(12),
  6    category VARCHAR2(12),
  7    department VARCHAR2(12));

Table created.

SQL>
SQL> CREATE TABLE promotion (
  2    promo_id varchar2(12CONSTRAINT promo_pk PRIMARY KEY,
  3    promo_name varchar2(15),
  4    promo_type varchar2(12));

Table created.

SQL>
SQL> CREATE TABLE FinancialYear (
  2    time_id DATE CONSTRAINT time_pk PRIMARY KEY,
  3    month NUMBER,
  4    quarter NUMBER,
  5    year NUMBER,
  6    season VARCHAR2(12));

Table created.

SQL>
SQL> CREATE TABLE SALES (
  2    time_id DATE NOT NULL CONSTRAINT time_fk                REFERENCES FinancialYear(time_id),
  3    store_id VARCHAR2(12NOT NULL CONSTRAINT store_fk      REFERENCES store(store_id),
  4    pc_id VARCHAR2(12)  NOT NULL,
  5    promo_id VARCHAR2(12NOT NULL CONSTRAINT promo_fk      REFERENCES promotion(promo_id),
  6    units NUMBER,
  7    dollars NUMBER,
  8    cost NUMBER,
  9    CONSTRAINT sales_pk PRIMARY KEY (time_id, store_id, pc_id, promo_id)
 10  );

Table created.

SQL>
SQL>
SQL> drop table sales;

Table dropped.

SQL> drop table FinancialYear;

Table dropped.

SQL> drop table promotion;

Table dropped.

SQL> drop table pc;

Table dropped.

SQL> drop table store;

Table dropped.

   
    
  
Related examples in the same category
1. Add Primary Key
2. Use alter table to add foreign key with cascade delete
3. Use alter table to add foreign key with cascade delete for more than one column
4. Alter a table to insert primary key and index
5. Add primary key and try to insert default value to it
6. DUP_VAL_ON_INDEX exception.
7. Alter table to add primary key
8. Alter table to primary key and check it in user_ind_columns and user_cons_columns
9. Add primary key as the last statement
10. Setting primary key as declaring the column
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