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What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
A database administrator''s responsibilities and data contents
Define garbage collection. Garbage may be formed also as a side effect of crashes. Periodically, it is essential to find all the garbage pages and to add them to the list of fr
Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
What is the difference between WHERE and HAVING clauses?. Predicates in the WHERE clause applies to every tuple while the predicate in the HAVING clause applies to groups.
A set of possible data values is called? A set of possible data values is called as domain.
explain thee diffrent types of data models
What are the benefits of OOA technology? Using OOA technology can produce many benefits, such as: i) Reusability of code ii) Productivity is gained through direct mappi
Define single valued and multivalued attributes. Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes. M
Which data manipulation command combines the records from one or more tables ? JOIN data manipulation command combines the records from one or more tables.
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