Question

Break down the following statement:

CREATE TABLE celebs (
id INTEGER PRIMARY KEY,
name TEXT UNIQUE,
date_of_birth TEXT NOT
NULL,
date_of_death TEXT
DEFAULT 'Not Applicable'
);
What does the following SQL statement do?
A) Creates a table named "celebs" with columns id, name, date_of_birth, and date_of_death.
B) Inserts data into the "celebs" table.
C) Updates the "celebs" table with new information.
D) Deletes the "celebs" table from the database.

Answer 1

The SQL statement creates a new table named 'celebs' with specific columns and constraints, such as primary key, unique, not null, and default values.

Step-by-step explanation:

The SQL statement CREATE TABLE celebs (id INTEGER PRIMARY KEY, name TEXT UNIQUE, date_of_birth TEXT NOT NULL, date_of_death TEXT DEFAULT 'Not Applicable') performs the following actions:

• It creates a new table in the database named celebs with four columns: id, name, date_of_birth, and date_of_death.
• The id column is set as the PRIMARY KEY, meaning each value in this column must be unique and not null, identifying each record in the table uniquely.
• The name column is of TEXT data type and is set to be UNIQUE, which means it cannot have duplicate values across rows.
• The date_of_birth column is of TEXT data type and comes with a constraint NOT NULL, ensuring that no row can have a null value for this column.
• The date_of_death column is of TEXT data type and has a DEFAULT value of 'Not Applicable', which will be assigned to the column if no other value is specified when a record is inserted.

Therefore, the correct answer to what the SQL statement does is A) Creates a table named "celebs" with columns id, name, date_of_birth, and date_of_death.

.