States in Database
At any certain point of time the Database can be at any states out of these three:
- Empty stage: This state occurs when a new Database is created.
- Initial stage: This state occurs when the data is inserted into the Database for the vary first time.
- Current stage: The present image of Database at current time.
The Schema for the above table is as follows: Orders ( order_id: integer, item: string, amount: integer, customer_id: integer);
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.