What is the purpose of 'nav' tag in HTML5?
This tag represents a section of the document intended for navigation.
What are various DDL commands in SQL? Give brief description of their purposes.
Following are various DDL or Data Definition Language commands in SQL − CREATE − it creates a new table, a view of a table, or other object in database. ALTER − it modifies an existing database object, such as a table. DROP − it deletes an entire table, a view of a table or other object in the database.
List the types of inheritance supported in C++.
Single, Multilevel, Multiple, Hierarchical and Hybrid.