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HR Sample Schema Table Descriptions

Consider the columns of each table of HR sample schema.

Table HR.COUNTRIES

Table 4-3 HR.COUNTRIES Table Description

Column Name	Null?	Type
`COUNTRY_ID`	`NOT NULL`	`CHAR(2)`
`COUNTRY_NAME`		`VARCHAR2(40)`
`REGION_ID`		`NUMBER`

Table HR.DEPARTMENTS

Table 4-4 HR.DEPARTMENTS Table Description

Column Name	Null?	Type
`DEPARTMENT_ID`	`NOT NULL`	`NUMBER(4)`
`DEPARTMENT_NAME`	`NOT NULL`	`VARCHAR2(30)`
`MANAGER_ID`		`NUMBER(6)`
`LOCATION_ID`		`NUMBER(4)`

Table HR.EMPLOYEES

Table 4-5 HR.EMPLOYEES Table Description

Column Name	Null?	Type
`EMPLOYEE_ID`	`NOT NULL`	`NUMBER(6)`
`FIRST_NAME`		`VARCHAR2(20)`
`LAST_NAME`	`NOT NULL`	`VARCHAR2(25)`
`EMAIL`	`NOT NULL`	`VARCHAR2(20)`
`PHONE_NUMBER`		`VARCHAR2(20)`
`HIRE_DATE`	`NOT NULL`	`DATE`
`JOB_ID`	`NOT NULL`	`VARCHAR2(10)`
`SALARY`		`NUMBER(8,2)`
`COMMISSION_PCT`		`NUMBER(2,2)`
`MANAGER_ID`		`NUMBER(6)`
`DEPARTMENT_ID`		`NUMBER(4)`

Table HR.JOBS

Table 4-6 HR.JOBS Table Description

Column Name	Null?	Type
`JOB_ID`	`NOT NULL`	`VARCHAR2(10)`
`JOB_TITLE`	`NOT NULL`	`VARCHAR2(35)`
`MIN_SALARY`		`NUMBER(6)`
`MAX_SALARY`		`NUMBER(6)`

Table HR.JOB_HISTORY

Table 4-7 HR.JOB_HISTORY Table Description

Column Name	Null?	Type
`EMPLOYEE_ID`	`NOT NULL`	`NUMBER(6)`
`START_DATE`	`NOT NULL`	`DATE`
`END_DATE`	`NOT NULL`	`DATE`
`JOB_ID`	`NOT NULL`	`VARCHAR2(10)`
`DEPARTMENT_ID`		`NUMBER(4)`

Table HR.LOCATIONS

Table 4-8 HR.LOCATIONS Table Description

Column Name	Null?	Type
`LOCATION_ID`	`NOT NULL`	`NUMBER(4)`
`STREET_ADDRESS`		`VARCHAR2(40)`
`POSTAL_CODE`		`VARCHAR2(12)`
`CITY`	`NOT NULL`	`VARCHAR2(30)`
`STATE_PROVINCE`		`VARCHAR2(25)`
`COUNTRY_ID`		`CHAR(2)`

Table HR.REGIONS

Table 4-9 HR.REGIONS Table Description

Column Name	Null?	Type
`REGION_ID`	`NOT NULL`	`NUMBER`
`REGION_NAME`		`VARCHAR2(25)`