Computers and Technology, 27.04.2021 15:20 brie821
The meaning of these relations is straightforward. Primary key attributes are underlined. Thus SID is the primary key for SAILORS, BID is the primary key for BOATS, and all three attributes of RESERVES together form the primary key of RESERVES. Arrows indicate foreign keys. Attribute NO_OF_RED records the number of reservations of red boats by a sailor. Write (a) an SQL row level trigger and (b) an SQL statement level trigger that maintain the value of attribute NO_OF_RED every time a reservation is made.
Answers: 2
Computers and Technology, 22.06.2019 09:30
What are the steps involved in accepting all the changes in a document? arrange these in order click edit. click accept or reject. click changes. click accept all.
Answers: 1
Computers and Technology, 22.06.2019 14:00
What are procedures that keep a data base current
Answers: 1
Computers and Technology, 23.06.2019 01:10
Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts
Answers: 1
Computers and Technology, 23.06.2019 17:00
What are the 12 colors of the spectrum called?
Answers: 1
The meaning of these relations is straightforward. Primary key attributes are underlined. Thus SID i...
Mathematics, 05.05.2020 19:16
Mathematics, 05.05.2020 19:16
Social Studies, 05.05.2020 19:16
Computers and Technology, 05.05.2020 19:16
Mathematics, 05.05.2020 19:16
History, 05.05.2020 19:16
English, 05.05.2020 19:16