Insert - referential integrity, Database Management System

The insertion of a tuple in the aim of reference does not cause any destruction. Though, insertion of a tuple in the relation in which, we has the foreign key, for instance, in ASSIGNMENT relation it requires to be ensured that all matching target candidate key be; or else the insert operation can be discarded. For instance, one of the possible ASSIGNMENT insert operations would be (LG, 103, 3000).

Posted Date: 3/6/2013 6:38:51 AM | Location : United States







Related Discussions:- Insert - referential integrity, Assignment Help, Ask Question on Insert - referential integrity, Get Answer, Expert's Help, Insert - referential integrity Discussions

Write discussion on Insert - referential integrity
Your posts are moderated
Related Questions
Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)

What is difference between primary index and secondary index? Primary Index a) It is an ordered file whose records are of fixed length along with two fields. b) Only base

A B-tree of order how much children m has maximum ? m has maximum m mchildren in a B tree.

What is schema

Failure Controlling Methods: Failures can be handled using different recovery methods that are talk about later in the unit. But the first question is doing we really require recov

What is a block and a block number? A block is a contiguous sequence of sectors from a single track of one platter. Every request specifies the address on the disk to be refere

Greater potential for bugs: Since the sites of a distributed system operate simultaneously, it is more complex to ensure the correctness of algorithms. The art of constructing dis

What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha

What is Message switching Message switching transmits data units which can be arbitrarily long. Packet switching has a utmost packet size, if any message longer than that, it s

Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages