Question: Every row for any key attributes (attributes for primary, candidate, or foreign keys) cannot have empty or null values. True False

Every row for any key attributes (attributes for primary, candidate, or foreign keys) cannot have empty or null values. True False

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 Databases Questions!

Q:

Referential integrity is the idea of ensuring that values linking the tables together through the primary and foreign keys are valid and correctly synchronized. * True False A crow's foot on each...

Q:

could someone please help me these access assignment Accounting Information Systems Access Assignment S&S Revenue Database Introduction to Microsoft Access: Microsoft Access is representative of...

Q:

The DBMS that uses a table - based format for data storage is: Question 1 options: a ) Network DBMS b ) Hierarchical DBMS c ) Relational DBMS d ) Object - Oriented DBMS Question 2 ( 1 point ) Which...

Q:

Complete the following DBTable class BTree class. The DBTable class implements the basic parts of a database table. The BTree class implements a B+ Tree. The DBTable must use the B+Tree to find rows...

Q:

Conduct normalization analysis on CLYSTMS by listing the FDs and the highest normal form of each relation. Complete the task by filling in the row "Normalization Analysis." Database The relation...

Q:

1. In the relational model, a column that connects one table to another is called a foreign key TrueFalse 2. If every determinant in a relation is a key, then the relation conforms to Fourth Normal...

Q:

Consider the following relational schema: Student(stdNo, firstName, lastName, eMail) Course(code, name, credits) WhenOffered(course, semester, year, examiner) Staff(staffID, name, birth-date,...

Q:

CIT 170 Database Project After reading through this entire document, please watch the video on Project Design Hints. The video has additional information to assist you with your design phase. You are...

Q:

Please help!!! CHAPTER 4 RELATIONAL DATABASES 129 The constraint that all foreign keys must have either nall values or the value of a primary key in another table is referred to as which of the...

Q:

Note: Need answers to these multiple choice questions asap please and thank you. I would greatly appreciate someone's help. - A composite key: Is used primarily for faster retrieval Cannot be used as...

Q:

Consider each of the following independent situations: A. Inventory on hand at year-end has been valued at cost in the financial report of your client. However, net realisable value is 10% below cost...

Q:

You are considering an investment in the stock market and have identified two potential stocks (XYZ and ABC) to purchase. The historical returns for the past five years are shown in the table below....

Q:

En qu tiempo, en aos, se duplicar un capital de $3.500 a una tasa de inters efectiva del 15.75%?

Q:

An important unit consists of two components placed in parallel. Only one component is operated at a time, but both components are kept operational as often as possible by repairing them as needed....

Q:

=+5. What do you want them to think?

Q:

=+8. What kind of tactics (specific ad/promotional techniques) do you want to use? For example, do you want to use viral marketing, interactive online components, out-of-home messages, print ads,...

Q:

=+What the product does for the end-user.)