Update Statement lets you to update existing one or more records in the database table depending on condition. Example "Where student ID = 1 " - It is a condition, means update student record whose ID number is = 1.
Database is a collection of data stored in a computer disc space or server space.
In simple words it is a space where your data is been stored.
Insert, Select, Update and Delete altogether also known as DML (Data Manipulation Language) statements which helps in managing the data with the database within schema objects.
We will not get into more detailed explanation about the database but just a breif for undertsanding.
(Data Type : For string data choose - varchar(50) or above, for integer data choose - int) Step 3 Adding connection string to web.config file.