Week 7

In week 7 we learned about DATABASE, which is a collection of interrelated data stored together with controlled redundancy to serve one or more applications in an optimal way.
And, then we learned about Database Management System, which, is a software system for manipulating databases.


As usually, we did an activity in class for which we had to find an example of database.
After learning these two definitions we moved on to Database Components, which are, Data Item, Relationships, Constraints and Schema.
Examples of DBMS are Microsoft Access, Oracle, SQL Server, MySQL.
The hierarchical data model organizes data in a tree structure.
There is a hierarchy of parent and child data segments.
In relational databases, fields can be used in a number of ways (and can be of variable length), provided that they are linked in tables


Then we moved on to the Building of database using Microsoft Access, which is the database management program that enables us to maintain database.