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Why a report generator is used ?
Report generator is used for print files on paper.
Describe different steps of the object-oriented design process. The broad steps of the object-oriented design process are: a. Define context and modes of use of the system
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
What is a virtual table that draws its data from the result of an SQL SELECT statement? View is a virtual table that draws its data from the result of an SQL SELECT statement.
What is a Name? A user-supplied name is used for identity. This form of identity is used for files in file systems. The user gives every file a name that uniquely identifies it
What is an object ID? Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent dat
4. Describe three ways to handle missing field values
how to find entities
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
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