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Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Explanation on Data Sharing?
For problems 1-4, give all candidate keys for the tables with FDs specified. Composite candidate keys must be put in parentheses, and candidate keys must be separated with commas
The clause in SQL which specifies that the query result should be sorted in ascending or descending order based upon the values of one or much more columns is Ans : Order by
exercise solution
What is the full form of ODBC ? ODBC stands for Open Database Connectivity.
Desirable Properties Of Decomposition Decomposition is a process of dividing a relation into its projections that will not be disjoint. Please remind the Relational projection
Group By clauses • It is used to group database tuples on the basis of definite common attribute value like as employees of a department. WHERE clause still can be used
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
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