Question: In relational databases, a primary key: a ) Can have duplicate values b ) Uniquely identifies each record in a table c ) Is optional

In relational databases, a primary key:
a) Can have duplicate values
b) Uniquely identifies each record in a table
c) Is optional in a table
d) Can have null values

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Civil Engineering Questions!

Q:

Access to accurate and timely information is key to proper decision making in a business! This units assignment is to develop the main database for your assigned business. This will be done in steps,...

Q:

QUESTION 2 Which of the following are correct statements about Primary Key of a table? A. Primary Key uniquely identifies a row in the table B. The value of a column which is constituent of the...

Q:

In relational database design, a primary key of one table that is also included in another table Usually ensure that we can get all the information we need to make a decision by querying only one...

Q:

Oracle Database Analysis and Design Need help on questions 4-7, please This project is to develop and implement an Oracle database. See the scenario of the Investment database. This simplified...

Q:

Oracle Database Analysis and Design This project is to develop and implement an Oracle database. See the scenario of the Investment database. This simplified Investment Portfolio case study maintains...

Q:

Oracle Database Analysis and Design This project is to develop and implement an Oracle database. See the scenario of the Investment database. This simplified Investment Portfolio case study maintains...

Q:

1 5 points An array (range) of cells across a column in Microsoft Excel would be considered which of the following terms under the data hierarchy? Data field Database File Record 2 5 points A...

Q:

please write the queries for questions 4-6 Directions This unit, you are provided with a small Microsoft Access database that contains data about a book seller with the following characteristics 1....

Q:

i need help trying to solve the queries for questions 7-10 Directions This unit, you are provided with a small Microsoft Access database that contains data about a book seller with the following...

Q:

Directions This unit, you are provided with a small Microsoft Access database that contains data about a book seller with the following characteristics 1. The book seller keeps track of the ISBN,...

Q:

Based on the following bank reconciliation, prepare the journalentries: Lisa Chai Associates Bank Reconciliation July 31, 20 -- Bank statement balance, July 31 Add deposits in transit $2 764 40 $250...

Q:

Blush Corporation owns long-term bonds (basis of $1.3 million) of its subsidiary, Brass Corporation, that were acquired at a discount. Upon liquidation of Brass pursuant to 332, Blush receives a...

Q:

Under which of the following set of circumstances is it most likely that the auditors disclaim an opinion? Multiple Choice 1 0 - 4 3 The financlal statements comtain a departure from generally...

Q:

Strawberry Fields purchased a tractor at a cost of $40,000 andsold it two years later for $25,100. Strawberry Fields recordeddepreciation using the straight-line method, a five-year servicelife, an 2...