Explain the following terms as used in database implementation. [3 Marks]a. Primary keyb. Columnc. Row

a. Primary Key: A primary key is a special relational database table column (or combination of columns) designated to uniquely identify all table records. It has two main purposes: to provide a link to data stored in different tables and to enforce entity integrity by ensuring that no duplicate data exists.

b. Column: In the context of a relational database, a column is a set of data values of a particular type, one value for each row of the database. A column may contain text values, numbers, or even pointers to files in the operating system. Columns are also known as fields.

c. Row: A row in a relational database is a data structure that holds a single record in a table. In simple terms, a database row can be thought of as a single, structured entry in a table, where each row in the table holds different data. Rows are also known as records or tuples.