Database-Management-System
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
| Question 727 |
Which of the following statements is incorrect?
| Data definition languages is used by DBA and database designers to define schemas | |
| Storage definition language is used to specify the internal schema. | |
| Storage definition language is used to insert,delete and update data | |
| Data definition languages is used to retrieve data from the database |
Question 727 Explanation:
→ A database system provides a data definition language to specify the database schema and a data manipulation language to express database queries and updates.
→ Storage definition language is to specify the internal schema. This language may specify the mapping between two schemas.
→ A data manipulation language (DML) is a computer programming language used for adding (inserting), deleting, and modifying (updating) data in a database.
→ Storage definition language is to specify the internal schema. This language may specify the mapping between two schemas.
→ A data manipulation language (DML) is a computer programming language used for adding (inserting), deleting, and modifying (updating) data in a database.
Correct Answer: C
Question 727 Explanation:
→ A database system provides a data definition language to specify the database schema and a data manipulation language to express database queries and updates.
→ Storage definition language is to specify the internal schema. This language may specify the mapping between two schemas.
→ A data manipulation language (DML) is a computer programming language used for adding (inserting), deleting, and modifying (updating) data in a database.
→ Storage definition language is to specify the internal schema. This language may specify the mapping between two schemas.
→ A data manipulation language (DML) is a computer programming language used for adding (inserting), deleting, and modifying (updating) data in a database.
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