Tables

Table:
A table is a fundamental structure in a relational database. It is a two-dimensional data structure that organizes data into rows and columns. Each table represents a collection of related data entities, and each row in the table represents a single record, while each column represents a specific attribute or field of the records.

For example, a table called "Employees" might have columns like "EmployeeID," "FirstName," "LastName," "Department," and so on.

Column:
A column, also known as a field, is a vertical division of a table. It represents a specific attribute or piece of information about each record in the table. Each column has a name and a data type that defines what kind of data can be stored in it.

For example, in the "Employees" table, "EmployeeID," "FirstName," "LastName," and "Department" are columns.

Row:
A row, also known as a record or tuple, is a horizontal division of a table. It represents a single instance of data with values for each column in the table. Each row corresponds to a specific entry or entity within the table.

For example, in the "Employees" table, each row would represent a single employee with their unique EmployeeID, FirstName, LastName, and Department.

Cell:
A cell refers to the intersection of a row and a column in a table. It represents a single data value in the table and is the smallest unit of data in a relational database.

For example, in the "Employees" table, each cell contains the actual data for an individual attribute of a specific employee. For instance, the cell at the intersection of the "FirstName" column and the first row would hold the first name of the first employee.

In summary, a table is a collection of rows and columns that organizes data into a structured format. Each column represents a specific attribute, each row represents a single record, and each cell holds a single data value corresponding to a specific attribute of a particular record. This structure allows for efficient storage and retrieval of data in relational databases.