MySQL – Data and Database
Hello and welcome to everyone. Today we will learn about
MySQL concepts like what is Data and Database.
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Data
Data is a collection of information. Data means data can be
any information. For example, there is an employee and all the information
about the employee like employee id, employee name, employee age, employee
phone number, employee address, employee salary, employee designation, this is
called data or it’s called data elements.
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Database
The database is a systematic collection of data. The database
is a set of related data and how it is structured. The database is not just a
group of lads and bytes and worthless information, its data that does have a
common determination. The data could be for more than one object. For example,
if you considering employee, all the information about the employee like
employee id, employee name, employee age, employee phone number, employee
address, employee salary, employee designation. These all information about an employee
it’s called data and organizing that data in a systematic collection of manner
then that is called database. Every database has one or more separate apis for
creating, access, manage, drop, delete and search data which you want to show. In
these days we using relational database management systems to the collection
and manage data. The database is working to make some very important divisions
about the data elements. So an element, being part of data like id, name, age,
phone number, address, salary, designation, etc. Now I have the date format
here of May 7th, 2015 that is the date. So that would be a date
object and that is working to be separate from a time object. Now the time of 9
pm that is working to consider time, not a date. So these are date and time
just data types, that can we roll up to total hours worked.
Different types of database
1.
Relational Databases
2.
Hierarchical Databases
3.
Cloud Databases
4.
Operational Databases
5.
Object-oriented Databases
6.
Network Database
7.
Distributed Databases
8.
Graph Databases
9.
Non-Relational Databases
1. End-user
Databases
We will learn in the next step about types of database.
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