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Q.1 Briefly discuss the different layers of ANSI SPARC architecture.
Ans: The three layers of ANSI SPARC architecture are like this:
1. Internal view is at the lowest level of abstraction, closest to the physical storage method employed. It points out how the data will be stored and explains the data structures and access methods to be employed by the database. There is one internal view for the whole database.
2. Global or Conceptual View: At this level of abstraction all the database entities and the relationships between them are included. There is one conceptual view for the whole database.
3. External or User View: The external or user view is at the highest level of database abstraction in which just only those portions of the database concern to a user or application programme are involved. Some external or user views may exist for a specified global or conceptual view.
What is a B+-Tree index? A B+-Tree index takes the form of a balanced tree in which each path from the root of the root of the root of the tree to a leaf of the tree is of the
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
non numeric literals
Project: Microsoft Access You have been asked by the ABC Tanning Salon to create a database that can be used to track the salon's customers. You are to create a table in Access
Attributes and its types explain?
In the first unit of this block, you have been given with the details of the Database Management System, its structure, advantages etc. This unit is an attempt to give you informat
What is NULL? Simply NULL means not in value.
Explain the relevance of Data Dictionary in a Database System? Data dictionary is a database in its own right residing on the disk that consist of Meta data which is = Data abo
Question : Mr. Smith Harry has a car manufacturing company which has recently integrated management information system. He wishes to obtain more information on ethics and socia
Function requirement as given: 1> manage fans and likes and followings those information from facebook. twitter. google+ and linkedin etc 2> Organize the clients from email m
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