The Role of Information Technology
I am sure that you know very well about Hazrat Israfeel Alaihissalam, the angle who will breathe into a megaphone for the whole humanity to call them on the Day of Judgment.
I am sure that you know very well about Hazrat Israfeel Alaihissalam, the angle who will breathe into a megaphone for the whole humanity to call them on the Day of Judgment.
What are the database anomalies? Briefly discuss insertion, deletion and modification anomalies. Database Anomalies Database anomalies are the problems in...
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When is a relation in first normal form? Explain with example. A relation is in first normal form (1NF) if...
What is functional dependency? Explain with Example. Function Dependency A functional dependency is a relationship between two attributes. It...
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What is normalization? How it can be used to bring the database in a consistent state? Express graphically. The process...
A synonym is a type of problem that exists in relation. A synonym is created when two different names are used for the same information or attribute. The name of attribute must be same if it exists in two or more relations.
What do we do to attain entity integrity? Attaining Entity Integrity The entity integrity can be attained by specifying primary...
Integrity is related to the quality of data. Integrity is maintained with the help of integrity constraints. These constraints are the rules that are designed to keep data consistent and correct. They act like a check on the incoming data.