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Explain the two types of participation constraint.
1. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates in at least single relationship in R.
2. Partial: if only few entities in E participate in relationships in R, the participation of entity set E in relationship R is said to be partial.
State the meaning of Object Representation The term object representation means "to represent object with the help of objects model symbols". Implementing objects is too simp
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
Briefly describe the different kinds of users of a DBMS. Ans: Different sorts of DBMS users are: (a) Software Engineers: These are the people accountable for developing ap
What is Message switching Message switching transmits data units which can be arbitrarily long. Packet switching has a utmost packet size, if any message longer than that, it s
Illustrate different types of Locks in SQL Server. There are three kinds of locks in SQL Server i.) Shared locks - These are used for operations which don't allow any update
define lock conversion
What is Multivalued Attribute? Multivalued Attribute - Multivalued attribute might have more than one value for an entity. For instance, PreviousDegrees of a STUDENT.
Name the various privileges in SQL? A) Delete B) Select C) Insert D) Update
A database administrator''s responsibilities and data contents
Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
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