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ERD, Database Management System
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Posted Date: 2/21/2013 9:40:57 AM | Location : Pakistan
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Find out the names and company names from database, Find out the names and ...
Find out the names and company names of all employees sorted in ascending order of company name and descending order of employee names of by which company. SELECT EMPLOYEE_NAME,
Define cascading rollback, Define Cascading rollback The phenomenon whe...
Define Cascading rollback The phenomenon where a single transaction failure leads to a series of transaction rollbacks is known as Cascading rollback.
What are the storage types, What are the storage types? The storage typ...
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
The conceptual level or global level in dbms, The Conceptual Level or Globa...
The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
Set concept is used in which type of modelling, SET concept is used in whic...
SET concept is used in which type of modelling? SET concept is used in Network Model.
Which of the operations constitute a basic set of operations, Which of the ...
Which of the operations constitute a basic set of operations for manipulating relational data? Relational algebra operations constitute a basic set of operations for manipulati
What is e-r model, What is E-R model? This data model is based on real ...
What is E-R model? This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a da
Define deadlock prevention, Define deadlock prevention. Deadlock preven...
Define deadlock prevention. Deadlock prevention is a set of methods for ensuring that at least one of the four essential conditions like mutual exclusion, hold and wait, no pre
Determine the three views of data, Determine the Three Views of Data We...
Determine the Three Views of Data We know that the similar thing, if viewed from dissimilar angles produces difference sights. Similarly, the database that we have formed alrea
What is alternate key, What is Alternate Key Alternate Key: This is t...
What is Alternate Key Alternate Key: This is the candidate key which is not taken as the primary key of the table. They are named so because although not the primary key, the
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