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What Count function return in SQL?
Count function within SQL returns the number of values. (Count function counts all the not null values in the exact column. If we need to count just distinct values than the DISTINCT keyword is also to be used)
define lock conversion
What is Cross Product? Simply Cross product is Binary Operator
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
Copy Data from One Database to another Database Project Description: I am having two MySQL databases with same tables. I just need to copy one Data from one to another dat
Explain the Query Processing Data Query Processing permits a user to report or analyze structured and unstructured data pulled from multiple data sources.
how to solve the C type problems?
Question: Describe briefly the three parts of the Relational Model. (a) The term integrity refers to the accuracy or correctness of the data in the database. Define the fol
Example: //REVOKE ALL ON EMP FROM MCA12; (All permissions will be cancelled) You can also cancel only some of the permissions. Drop: A user-
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
a set of possible data value of an attribute is called??
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