data models, Database Management System

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Relational database, Convert the following ER - diagram (Entity Relationsh...

Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): 2160_Convert the following ER - diagram into a

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Define rotational latency time. The time spent waiting for the sector to be accessed to appear under the head is known as the rotational latency time.

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Let us now make the E-R diagram for the student database as per the explanation given in the previous section. We can also states the overall logical structure of a database usi

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What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.

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Domain Constraint It shows that each attribute in a relation has to contain an atomic value only from the corresponding domains. The data types associated with commercial RDBMS

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