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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.
Question: (a) Use the following business rules to produce the E-R diagram. You should clearly show all the minimum and maximum cardinality constraint on each side of the relati
how can apply joins on table
What do you mean through integrity constraints? Integrity Constraints -An integrity constraint is a condition specified on a database schema and restricts the data in which
How does Tuple-oriented relational calculus vary from domain-oriented relational calculus? The tuple-oriented calculus uses a tuple variables i.e., variable whose only allowed
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
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
why older data models are being replaced by new data models.
Explain algorithm of ER To Relational Mapping ? ER-to-Relational Mapping Algorithm: 1) Step 1: Mapping of regular entity types: For each strong entity type E, form a relatio
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
A database to track your progress in your college program will track your progress towards graduation! A database that has information containing the classes that you have taken, c
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