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by E-Computer Concepts 8 months ago


Normalization is a design technique that is widely used as a guide in designing relational databases. Normalization is essentially a two step process that puts data into tabular form by removing repeating groups and then removes duplicated...

by E-Computer Concepts 8 months ago

E-R Modeling

Entity Relationship Modeling (ER Modeling) is by far the most common way to express the analytical result of an early stage in the construction of a new database. E-R Diagram are the way to achieve this. Entity Relationship diagram...

by E-Computer Concepts 9 months ago

Relational Algebra Operators

The Eight Relational Algebra Operators are: 1 Select To retrieve specific tuples/rows from a relation. 2 Project To retrieve specific attributes/columns from a relation. 3 Product To obtain all possible combination...

relational model
by E-Computer Concepts 9 months ago

Relational Model

The Relational Model was a huge step forward, as it allowed files to be related by means of a common field. In order to relate any two files, they simply need to have a common field, which makes the model extremely flexible. Relational...

by E-Computer Concepts 11 months ago

Data And Information

Data Data refers to raw facts and figures. It can be anything like name of a person or a place or a number etc. Data is a name given to basic facts and entities such as names and numbers. Information It is the processed form...