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What is a Built-in
A notation of identity is built-into the data model or programming language and no user-supplied identifier is needed. This form of identity is used in object oriented systems.
what is union compatable?
how many hourse have been spent on a certain project
domain
What is the use of rename operation? Rename operation is used to rename both relations and an attributes. It uses the as clause, taking the form: Old-name as new-name.
create an er diagram for production management in film industry
Discuss the problem of Spurious tuples and how we may prevent it. Ans: A spurious tuple is, mainly, a record in a database that gets created while two tables are joined bad
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
lock and types of lock
Describe Query evaluation engine? Query Evaluation engine: Vehicle executes low-level instructions obtained through the DML compiler. The Storage Manager Components gives in
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
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