Which of the Following Best Describes the Primary Key

A foreign key is which of the following. B A records foreign key value must be null.

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An attribute that serves as the primary key of another relation.

. We use cookies to ensure that we give you the best experience on our website. View the full answer. Which of the following statements best describes the entity integrity rule.

ATo support business processes across the organization. You need to enforce a relationship between the LOC_ID column in the FACILITY table and the same column in the MANUFACTURER table. Deletes a field from a table.

The first record in a data file O D. Answer all questions in this section 1. A To ensure that each row in the table is unique B To create the relationship between two tables C To provide business information but are not required to build a database D To.

Deletes a schema from a table. C Indicates the minimum multiplicities of an association. Animals Foster families Adoptions.

The definition of a primary key. In the world of databases the primary key of a relational table uniquely identifies each record in the table. A Allows linking two or more tables.

D All values of an attribute must be of the same data type. SQL - Primary Key. An attribute that serves as the primary key of another relation.

Databases use keys to compare sort and store records and to create relationships between records. Which of the following best describes the purpose of a primary key Uniquely identifies each instance of the class 6 Which of the following statements about foreign keys is not true A foreign key cannot be NULL 7. A primary key is a column or a combination of columns that uniquely defines each row in a table.

Another term for file name O C. A column or group of columns that identifies a unique row in a table. PRODUCT_ID NUMBER NOT NULL PRIMARY KEY.

A primary key uniquely defines each instance of a class in a data model or each row in a table in a database. B Matches values of foreign keys in other classes. Section 16 Quiz Database Programming With SQL.

Revise computer science GCSE by testing your knowledge in our primary key quiz. Choose three Mark for Review. A foreign key is at the primary key of one table repeated in another table in order to create a relationship between the tables.

A table can contain one or more columns suitable to be a primary key and that column or columns are called a candidate key. A table can have only one primary key which may consist of single or multiple fields. 11Which of the following best describes the purpose of a primary key.

Which of the following best describes the purpose of a primary key. An asterisk indicates a correct answer. Which of the following best describes the purpose of a primary key.

MODIFY location_id NUMBER 6. You issue this statement. When designing a database choosing a primary key is one of the most important steps.

Section 14 Quiz. To support business processes across the organization. Which of the following best describes the purpose of a primary key.

The function of a. Group of answer choices. The same thing as a primary key.

PRODUCT_NAME VARCHAR2 25 SUPPLIER_ID NUMBER FOREIGN KEY to SUPPLIER_ID of the SUPPLIER table. An asterisk indicates a correct answer. Choosing the primary key in a database is one of the most important steps in the process.

Generate a range of numbers and optionally cycle through them again Set a fixed interval between successively generated numbers. Previous Page 3 of 3 Summary. When multiple fields are used as a primary key they.

Answer all questions in this section 1. Group of answer choices. Deletes a record from a table.

To uniquely identify. A primary key is a field in a table which uniquely identifies each rowrecord in a database table. If you continue to use this site we will assume that you are.

Answer all questions in this section 1. To create the relationship between two tables. Which foster families have the animals and the adoption history of each animal.

A primary key column cannot have NULL values. 33 Which of the following best describes the purpose of a primary key. To ensure that each row in the table is unique.

BTo provide business information but are not required to build a database. Topics Databases Primary Key. Which of the following commands best describes the function of the DELETE command in a relational database.

Primary keys must contain unique values. C A records primary key must have a data value. Lets test your knowledge of Primary Keys.

Which of the following best describes the big themes or the topics of the database. D Uniquely identifies each instance of the class. A Describes the characteristics of the class B Allows two tables to be connected C Matches values of foreign keys in other classes D Uniquely identifies each instance of the class Feedback.

Which of the following best describes the function of a primary key. A composite primary key is made up of the three or more primary keys in the tables that it is linking. A primary key is a special relational database table column or combination of columns designated to uniquely identify each table record.

You created the LOCATION_ID_SEQ sequence to generate sequential values for the LOCATION_ID column in the MANUFACTURERS table. A To ensure that each row in the table is unique B To create the relationship between two tables. To provide decryption of data OB.

To provide business information but are not required to build a database. A A database entity must fit within the REA model. Review your answers feedback and question scores below.

Post the primary key of Pet Owners as a foreign key in the Pets 17. DTo ensure that each row in the table is unique. Which of the following actions follows the step of determining the requirements for new forms reports and queries during the development of a database application system.

To uniquely identify each record in a file. Ensure primary key values will be unique even though gaps may exist 2. Which of the following best describes the purpose of a primary key.

CTo create the relationship between two tables. It can be a normal attribute that is. Which of the following best describes a primary key.

Examine the structures of the PRODUCTS and SUPPLIERS tables. Sequences can be used to.

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