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Define DBA database administrator?
DBA: A database administrator (DBA) is a person who is responsible for the environmental aspects of a database. In common, these involves:
Recoverability - Creating and testing Backups Integrity - Verifying or helping to verify data integrity Security - Defining and/or implementing access controls to the data Availability - Ensuring maximum uptime Performance - Ensuring maximum performance Development and testing support - Helping programmers and engineers to economically utilize the database
The technique of converting the state diagram to code a) Identify all major control paths. Start from initial state; choose a path across the diagram that corresponds to normal
create an er diagram for production management in film industry
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
Making Common Behaviour Abstract Let us define abstraction "Abstraction means to focus on the necessary, inherent aspects of an entity and ignoring its accidental features". O
What is the use of group by clause? Group by clause is used to apply aggregate functions to a set of tuples. The attributes given in the group by clause are used to
Explain the term - Control as Concurrent Tasks As we know, any object can be implemented as a task in programming language or operating system. This is the most general approa
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
List some instances of collection types? a) sets b) arrays c) multisets
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
what is multivalued dependency
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