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UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples
What are the function of DBA?
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
What are the three types of data sources used with ODBC? An ODBC file data source is a file that can be shared between database users. An ODBC system data source is one that is
create an er diagram for production management in film industry
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
Problem: ‘Users and Information system specialists need to spend inordinate amounts of time locating and gathering data' (Watson and Hal, 1998) Recent developments in the ar
lock and types of lock
cardnality ratio for humanresource mangement system
Which operator is used to compare a value to a list of literals values that have been specified? BETWEEN operator is used to compare a value to a list of literals values that h
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