Before Open

Before the table the column is in is opened.

Before Close

Before the table the column is in is closed.

Before Read

Before the table the column is in is read.

Before Insert

Before a record is inserted to the table the column is in.

Before Update

Before a record is updated in the table the column is in.

Before Delete

Before a record is deleted from the table the column is in.

After Open

After the table the column is in is opened.

After Close

After the table the column is in is closed.

After Read

After the table the column is in is read.

After Insert

After a record is inserted to the table the column is in.

After Update

After a record is updated in the table the column is in.

After Delete

After a record is deleted from the table the column is in.