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What are called jukebox systems?
Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
What are the function of DBA?
Question: a) What is Client/Server and what benefits can be expected from Client/Server systems? b) Explain what middleware is and what it does. Why would MIS managers be p
Benefits of using heuristics
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Rearrange Classes and Operations Sometimes, the similar operation is defined across different classes and can easily be inherited from a familiar ancestor, but more often oper
List the SQL domain Types? SQL supports the following domain types. 1) Char(n) 2) varchar(n) 3) int 4) numeric(p,d) 5) float(n) 6) date.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Where does view definition stored? A view definition is permanently stored as part of the database.
Describe how you can simplify Operations. To simplify operation, one should use inheritance, where possible to use, to reduce the quantity of distinct operations. Introduce new
What is data definition language? Explain it in detail? The SQL DDL allows specification of not only a set of relations, but also information after each relation, containing
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