Read the statement - "In relational databases, all the values in a column will have the same data type." Choose the correct option with respect to the given statement.

Question

Exhibit

Options

• AYes
• BNo

• A
  93% (41)
• B
  7% (3)

Explanation

A relational database stores data and provides access to data points that are related to each other. A relational database follows the basic relational model that is a simple and straightforward method of storing data in tables. Each row of the table in a relational database represents a record with a unique id i.e. key. Each column of the table holds an attribute of the data, and each record represents the value for each attribute. For example, a table STUDENT_RECORD represents the record of students in a class and the attributes of columns are - Student_Id, Student_Name, Student_Branch, and Student_Marks. We need to define the data type of each attribute in the beginning at the time of the creation of the table. Here, if we set Student_Id as a number, all the values in the column Student_Id will contain numbers only. And if we set it as alphanumeric, all the values in the column Student_Id will contain both alphabets and numbers. So, Option A is correct. https://docs.rackspace.com/support/how-to/properties-of-rdbmss-and-nosql-databases/

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