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data models are being replaced over years. Reasons and why does that happen?
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
what is Mapping Constraints? with examples
what is stracture of dabms
A student entity type has the following attributes,name..
What is catalog in DBMS? Catalog - A relational DBMS maintains information about every table and index in which it contains. A catalog is a collection of special tables that st
entity relationship diagram for online examination system
What is an E-R model? Draw an E-R Diagram for the company database with following Descriptions? The company is organized within departments. Each department has a unique name a
A database is a set of data. But, is the data kept in a database trustworthy? To answer that query we must first answer the question. What is integrity? Integrity simply means t
What is the aim of logical schema ? The main motive of the logical schema is to ensure the portability of procedures and models on various physical schemas at runtime.
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