Web Development Consultant Interview Questions and Answers

The insert command is used to add new data into a database table.

• The insert command is part of SQL (Structured Query Language) and is used to insert new records into a database table.

• The syntax of the insert command includes the INSERT INTO statement followed by the table name and the values to be inserted.

• The values to be inserted can be specified explicitly or can be selected from another table using a subquery.

• The insert command can be used to insert a single record or mul...read more

The drop command is used to delete a database or collection in MongoDB.

• The drop command is used in MongoDB to delete a database or collection.

• It can be used with the db.dropDatabase() or db.collection.drop() methods.

• Be careful when using the drop command as it permanently deletes the data.

• Example: db.dropDatabase() will delete the entire database.

• Example: db.collection.drop() will delete the specified collection.