Moderate

The TNF describes the tabular format in which

Correct answer: D. All of the above

  • A. All the key attributes are defined
  • B. No repeating groups in the table
  • C. All attributes are dependent on the primary key
  • D. All of the above

Explanation

First Normal Form (1NF) is a fundamental concept in database normalization. A table is considered to be in 1NF if it adheres to all three of the following conditions:All the key attributes are defined: Each record (row) in the table must have a unique identifier, which can be a single key or a composite key consisting of multiple attributes.No repeating groups in the table: There should not be any lists or multiple values stored within a single cell in the table. Each cell should contain a single atomic value.All attributes are dependent on the primary key: Every non-key attribute (column) in the table should be fully dependent on the primary key. This means the value of a non-key attribute can be uniquely determined by the value of the primary key.In essence, 1NF lays the groundwork for a well-organized and efficient database structure by eliminating data redundancy and ensuring data consistency. By satisfying all the conditions mentioned in options (A), (B), and (C), a table achieves the 1NF form

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Databases cover tables, records, fields, keys and relationships, together with database management systems and relational database design. The subject includes primary and foreign keys, normalization, SQL commands such as SELECT, INSERT, UPDATE and DELETE, queries, forms and reports, while distinguishing a database from a spreadsheet used for simple tabular data.

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