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Objectives
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
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 ASS
Explain the three data models namely relational, network and hierarchical and evaluate their relative advantages and disadvantages. Hierarchical Model: In hierarchical model, da
cardnality ratio for humanresource mangement system
can you create a database for me in oracle/sql
QUESTION (a)(i) Define the term database. (ii) How is it different from a database management system? (b) What is the difference between an entity and an attribute? (c
Control as a State Machine Engine First let us define the state machine: "the state machine is a machine which is an object but not an application object. It is a part of lang
Hardware failure : Hardware failures are the failures when some disk or hardware chip fails. This may result in loss of data. One such trouble can be that a disk gets damaged and
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