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What three major types of actions includes databases? Briefly discuss these
The three major types of actions including databases are:
(i) Defining: It includes specifying the data types, structures and constraints of data types, structures and constraints the data to be stored within the database.
(ii) Manipulating: It involves functions such as querying the database to retrieve specific data updating the database to reflect changes within the miniworld and generating reports form data.
(iii) Sharing: It permits multiple users and programs to access the database at the same time.
Q. Explain data aggregatio n and discuss different design constraints. Sol. Aggregation One limitation of the E-R model is that it cannot express relationships amon
Rules Of Data Normalisation Let us now summarise Normalisation with the help of various clean rules. The following are the necessary rules for the Normalisation process: 1.
#floating point representation is used to store
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
Normal 0 false false false EN-US X-NONE X-NONE
Mention the various user privileges All privileges directly granted to the user or role. All privileges granted to roles that have been granted to the user or role.
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Which is the properties of entities? Attributes is the properties of entities.
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
What are the functions of an accumulator? The accumulator is the register associated with the ALU operations and sometimes I/O operations. It is an integral part of ALU. It hol
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