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Which component is not included in database environment ?
A users component is not included in database environment.
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
What is a hashing function? What are the properties of a good hashing function? Describe the folding technique for hashing functions. Ans: Hashing function is a method
Which data type can store unstructured data? Raw data type can store unstructured data.
Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
Define the categories of SQL Statements? 1) Statements that don't return a result set. This statement class includes INSERT, DELETE, and UPDATE. 2)Statements that return
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
Question: (a) What are decision support systems, and what role do they play in the business environment? (b) Data mining is a knowledge discovery process of automated extr
What is a view? How it is related to data independence? A view might be thought of as a virtual table, that is, a table that does not really exist in its own right but is inste
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Examples:- Hierarchical Model: It tells data as and relationships by hierarchy of data values. Figure illustrates an example of hierarchical model. Now a day's these models are
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