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In an E-R diagram how attributes are represented ?In an E-R diagram attributes are represented in a ellipse.
The File Based System File based systems are an early attempt to computerise the manual filing system. For example, a manual file can be set up to hold all the correspondence r
What is E-R model? This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a da
Define Catalog and meta data ? A catalog is a compilation of records elaborating the contents of a particular collection or group of collections. Metadata (Meta data, or someti
example of bank
What are the features of embedded SQL? Explain. Embedded SQL - SQL could be implemented within two ways. It can be used interactively or embedded in a host language or throu
diagrams and meaning
Consider a table student (std_id, std_name, date_of_birth, percent_marks, dept_name). Write a QBE query to display names of Computer Science department students who have scored mo
Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
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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.
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