SQL triggers

Creating tables

Create table linnad(
linnID intAuto_increment PRIMARYKEY,
linnanimi varchar(15),
rahvaarv int);

Create table logi(
id intAuto_increment PRIMARYKEY,
aeg DATETIME,
toiming  varchar(100),
andmed varchar(200)
)

Creating an add trigger

Adding data and checking the trigger

Creating a deletion trigger

trigger check

Creating an update trigger

Functional check

Creating two new tables

Createtablelogitabel(
id intAuto_increment PRIMARYKEY,
aeg DATETIME,toiming  varchar(100),
AUTOandmed varchar(200)
);

CreatetableAuto(
AutoID intAuto_increment PRIMARYKEY,
autonumber varchar(6),
mark varchar(20),
mudel varchar(20),
omanik varchar(50)
);

Trigger for deletion

Creation trigger

Trigger for update

Displaying logs