Employee to project activity table (EMPPROJACT)

The employee to project activity table identifies the employee who performs each activity listed for each project. The employee's level of involvement (full-time or part-time) and schedule for activity are also in the table.

The employee to project activity table is created with the following CREATE TABLE and ALTER TABLE statements:

CREATE TABLE EMPPROJACT
      (EMPNO     CHAR(6)          NOT NULL,
       PROJNO    CHAR(6)          NOT NULL,
       ACTNO     SMALLINT         NOT NULL,
       EMPTIME   DECIMAL(5,2)             ,
       EMSTDATE  DATE                     ,
       EMENDATE  DATE                     )

ALTER TABLE EMPPROJACT 
              ADD FOREIGN KEY REPAPA (PROJNO, ACTNO, EMSTDATE) 
              REFERENCES PROJACT 
              ON DELETE RESTRICT

The following aliases are created for the table:

CREATE ALIAS EMPACT FOR EMPPROJACT

CREATE ALIAS EMP_ACT FOR EMPPROJACT

The table below shows the content of the columns.

Table 1. Columns of the Employee to project activity table
Column name	Description
EMPNO	Employee ID number
PROJNO	PROJNO of the project to which the employee is assigned
ACTNO	ID of an activity within a project to which an employee is assigned
EMPTIME	A proportion of the employee's full time (between 0.00 and 1.00) to be spent on the project from EMSTDATE to EMENDATE
EMSTDATE	Start date of the activity
EMENDATE	Completion date of the activity