What is an Instance in a Database?
The instance of the database is the values of these variables at any given time. Instances are also called the current state or database state. The database schema is the design that defines the variables in tables that belong to a particular database. There may be many instances that correspond to a certain database schema. The new data items in a record can be inserted, modified, or deleted at any time. So, according to this, we can say that the data can change from one state to another.
Example 1 (Orders table):
Instance_example
The 5 rows in the above-provided table are called Instances because they provide the information of the Database stored at the current point in time. So, on this basis, we can say that the Instance gives the information of the Database at any point in time.
Example 2 (Customer table):
Customer_table
The above customer table 5 rows contain the information about Customers. So, these are the instances of Customers table.
Instance in Database
An instance shows the data or information that is stored in the database at a specific point in time. In this article we will come to know about, what is Instances in databases. We will see two examples related to it as well. But first of all, let us know about some terminologies related to it.