Which of the following are constraints that can be used with the create table command? Select one: a. references, alias, check b. null, primary key, view of c. primary key, not null, unique d. primary key, default, between

Which of the following are constraints that can be used with the create table command? Select one: a. references, alias, check b. null, primary key, view of c. primary key, not null, unique d. primary key, default, between

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter4: Constraints

Section: Chapter Questions

Problem 16MC: Which of the following types of constraints cant be created at the table level? a. NOT NULL b....

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SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.

Question

Which of the following are constraints that can be used with the create table command?

Select one:

references, alias, check

null, primary key, view of

primary key, not null, unique

primary key, default, between

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Which of the following is a correct statement? You can restore the data deleted with the DROP COLUMN clause, but not the data deleted with the SET UNUSED clause. You can’t create empty tables—all tables must contain at least three rows of data. A table can contain a maximum of 1000 columns. The maximum length of a table name is 265 characters.
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Which of the following is the valid syntax for adding a PRIMARY KEY constraint to an existing table? ALTER TABLE tablename ADD CONSTRAINT PRIMARY KEY (columnname); ALTER TABLE tablename ADD CONSTRAINT (columnname) PRIMARY KEY constraintname; ALTER TABLE tablename ADD [CONSTRAINT constraintname] PRIMARY KEY; None of the above is valid syntax.
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