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SELECT Statement
This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
Using Arithmetic operator
Example:
SELECT ENAME, SAL, SAL+300
FROM EMP;
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
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Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
examples of fields in a database
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
Define Boyce codd normal form A relation schema R is in BCNF with respect to a set F of functional dependencies if, for all functional dependencies in F + of the form.α ->β.
how to calculate frequency count of algorithm
Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
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