I am trying to create a database trigger in Oracle SQL Developer that would fire before any UPDATE
, DELETE
, or INSERT
statement occurs on the sessions table.
My sessions table:
CREATE TABLE sessions (
SessionNo NUMBER (2,0),
SessionTime VARCHAR2 (5),
SessionDay VARCHAR2 (20),
SessionDate DATE,
SpecID VARCHAR2 (2),
RoomNo CHAR (3),
BuildingNo CHAR (2),
FormID CHAR (4));
My example insert statement:
INSERT INTO sessions VALUES (1, '9', 'Monday', TO_DATE ('02/06/2016', 'mm/dd/yyyy'),
12, 108, 'M', 0050);
This trigger is supposed to check the date and time attributes, and if the day is a Saturday or a Sunday, or if the time is outside the school business hours (9am to 3pm), a message:
Out of business hours – this transaction has not completed, please change the
date/time
…should be displayed.
Best Answer
I do not think that the check is needed on delete. So create a trigger like: