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The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
The Enhanced Entity Relationship Diagram (ERD) produced with a drawing or case tool. Your EERD must use a ''standard'' notation style such as Crows Foot or Chen. Please note that t
What is view in SQL? How is it defined? Any relation that is not part of the logical model, but is made visible to a user as a virtual relation is known as a view. We descri
What is data model? Explain object based and record based data models? Ans: A data model is an abstract model in which describes how data is represented and accessed. (i)
what is relationship inheritance and attribute inheritance
I have a small project that contains 3 deliverable s. I have done the first one and I would like you to help me with second one
What is the use of integrity constraints? Integrity constraints make sure that changes made to the database by authorized users do not result in a loss of data consistency. The
sir, could anybody help me in getting complete information about the mentioned topic
What is Conceptual Schema? Conceptual Schema - Conceptual schema elaborates the structure of the overall database for a community of users. It hides the details of physical sto
What is transaction? Collections of operations that form a single logical unit of work are known as transactions.
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