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SQL Tutorial - 10: Creating Tables from Other Tables Video Lecture | Microsoft SQL for Beginners - Database Management

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FAQs on SQL Tutorial - 10: Creating Tables from Other Tables Video Lecture - Microsoft SQL for Beginners - Database Management

1. What is the purpose of creating tables from other tables in database management?
Ans. Creating tables from other tables in database management allows us to easily replicate the structure and data of an existing table, saving time and effort in creating new tables. It is particularly useful when we want to create similar tables with the same columns and data types.
2. How can we create a new table from an existing table in SQL?
Ans. To create a new table from an existing table in SQL, we can use the "CREATE TABLE" statement followed by the "AS" keyword and the "SELECT" statement. For example: CREATE TABLE new_table AS SELECT column1, column2, ... FROM existing_table;
3. Can we modify the structure of the new table while creating it from an existing table?
Ans. Yes, we can modify the structure of the new table while creating it from an existing table. We can add new columns, change column names, modify data types, and define constraints during the creation process. This allows us to customize the new table according to our requirements.
4. What happens to the data in the new table when creating it from an existing table?
Ans. When creating a new table from an existing table, the data from the existing table is copied to the new table. The new table will have the same data as the existing table at the time of creation. Any modifications made to the existing table after the creation process will not be reflected in the new table.
5. Can we create multiple tables from a single existing table in SQL?
Ans. Yes, we can create multiple tables from a single existing table in SQL. By using the "CREATE TABLE" statement with different table names and column selections, we can create multiple tables that have different structures and data. This can be done by repeating the process of creating a new table from the existing table multiple times.
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