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Let us now make the E-R diagram for the student database as per the explanation given in the previous section.
We can also states the overall logical structure of a database using ER model graphically with the help of an E-R diagram.
ER diagrams are composed of:
Figure: ER diagram of COLLEGE database
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Define Specialisation and generalization in brief? Specialisation / generalization: Generalization or Specialization represents the is a relationship set, an necessary element
Data Scrubbing 70,000 records Project Description: We need services of a developer competent in data cleansing/Data scrubbing. Scope: - 70,000 records in CSV format.
WHAT IS SQL
Question: The following relational database schema corresponds to a part of a database used by the Registry Department of a university. DEPARTMENT (d#, d-name, head-of-dept)
What is the use of a slotted-page structure and what is the information are there in the header? The slotted-page structure is used for organizing records within a one block.
Question 1 Discuss the classification of DBMS based on location of database Question 2 Explain with examples different SQL commands used for creating and deleting relations.
Define Query by Example QBE is a query language relies upon domain calculus and has two dimensional syntax. The queries are written in the horizontal and vertical dimensions of
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
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