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What is a candidate key? Minimal super keys are known as candidate keys.
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
what do you understand by enhanced entity-relationship
Describe the various types of Online Analytical Processing (OLAP) tools and briefly discuss how the support common analytical operations.
Explain the EXISTS and UNIQUE functions of SQL. Give an example for each? EXISTS: The EXISTS function takes one parameter that is a SQL statement. If any records exist which
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how many types of data model in DBMS? explain data abstraction with its different level
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Submit SQL SELECT Statements to demonstrate several reports off your database, according to the following guidelines: You must submit at least 5 SELECT Statements. Each
A file manipulation command that extracts some of the records from a file is called ? A file manipulation command that extracts some of the records from a file is called SELECT
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