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What is an index?
An index is a structure that helps to place desired records of a relation quickly, without probing all records.
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
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The Database administrator (DBA) uses the data dictionary in each phase of a database life cycle, beginning from the data gathering phase to the design, execution and maintenance p
What is an Index? An index is a small table having only two columns. The first column has a copy of the primary or candidate key of a table and the second column having a set o
Describe an data dictionary? A data dictionary is a data structure which keeps meta data about the structure of the database ie. the schema of the database.
Let us first look into some of the important features of ER model. Entity relationship model is a high-level conceptual data model. It permits us to define the data invo
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what factors might influence a company to outsource its IT infrascture.
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