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What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
explain ANSI SPARC architecture
What is Structured Query Langauge (SQL)? SQL is a powerful set-oriented language which was formed by IBM research for the databases that adhere to the relational model. It havi
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
Which operation is used if we are interested in only certain columns of a table? PROJECTION operation is used if we are interested in only certain columns of a table.
explain normalisation
Create Student DB and execute Insert query? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course
er diagram on cosmetics.
Differentiate between Key and superkey? Key and superkey - A key a single attribute or a combination of two or more attributes of an entity set in which is used to identify o
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