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Explain the term - Handling Boundary Condition
These are some circumstances that to be handled in any system initialization and termination.
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
definition and its work
what do you understand by enhanced entity-relationship
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 called an evaluation primitive? A relational algebra operation annotated with instructions on how to evaluate is known as an evaluation primitive.
To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Why 'AS' clause is used in SQL ? 'As' clause is used for Rename operation. ‘AS' clause is used in SQL for rename operation. (e.g., SELECT ENO AS EMPLOYEE_NO FROM EMP)
Define the terms i) DDL ii) DML DDL: Data base schema is particular by a set of definitions expressed by a special language known as a data definition language. DML: A data
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