"what is a database" Code Answer's
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what is database
A database is an organized collection of data,
generally stored and accessed electronically
from a computer system. Where databases are
more complex they are often developed
using formal design and modeling techniques.
what is database management system
it is a software that is used to store, retrieve, define, and manage data in a database.
what is relational database
Relational Database Management System
(RDBMS) means that tables in
database are related using
primary/foreign key relationship. Used to store,
modify and retrieve data in the database.
• How are they related?
Primary Key (unique and not NULL)
Foreign Key (duplicate and NULL)
• What type of database system you have expertise with?
RDBMS, such as SQL and Oracle
• Entity Relation Model (ERM):
An entity can be a real-world object, that can
be easily identifiable: student, class, teacher.
• Attributes:
Things that describe the Entity. (student name, age, birthday…)
what is a database
A database is an organised collection of related data from which you can easily retrieve and use data.
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