1.data should store in the form of a table.a table can be different as collection of rows&columns
A horizontal lines as Rows or Records/touples
A vertical lines are known as fields or attributes/columns
the intersection of rows&columns is known as cell
a cell is a place where we can store or a data.the other name of table can be known as entity/object.
table/entity/object:
fields/attributes/columns
rows/records/touples
2.table should not contain duplicate column
3.while do inserts the records the table user no need to follow any specific order.
4.data base should not contain duplicate objects
5.while do defines columns in the table user follow no need to order
A horizontal lines as Rows or Records/touples
A vertical lines are known as fields or attributes/columns
the intersection of rows&columns is known as cell
a cell is a place where we can store or a data.the other name of table can be known as entity/object.
table/entity/object:
fields/attributes/columns
2.table should not contain duplicate column
3.while do inserts the records the table user no need to follow any specific order.
4.data base should not contain duplicate objects
5.while do defines columns in the table user follow no need to order
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