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Explain Instance and schemas?
Instances and schemas: Databases changes over time as the information is deleted and inserted. The collection of information stored in database at a particular moment in time is known as Instances and the whole design of database is known as schemas.
Write a query that display ename annual salary and comm from emp table
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
What are the Objectives of object design After going through this unit, you could be able to: explain steps of object design; discuss algorithms that reduce costs;
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
For every multivalued attribute 'A', we make a new relation R that contains an attribute corresponding to plus the primary key attribute k of the relation that shows the entity typ
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
Lack of standards and experience: The lack of standards has considerably limited the potential of distributed DBMSs. As well, there are no tools or methodologies to help users cha
Which two tools are used to administer users for Active Directory?
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