1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leno4ka [110]
2 years ago
9

Which statements are true about a database?

Computers and Technology
2 answers:
anzhelika [568]2 years ago
6 0

Answer:

you cannot leave a field empty

you can enter data based on the defined data type

OverLord2011 [107]2 years ago
5 0

Answer:

You can enter data based on the defined data type.

A primary key uniquely identifies a record.

Explanation:

In a database, you can only enter data that matches the data type you have specified for that field. Therefore, you can enter text in fields with the text data type; numbers in fields with the number data type; or images in fields with the BLOb data type. You can have fields where data entry is optional. A primary key eliminates the chance of duplicate entries of the same record in a table.

You might be interested in
Two electronics technicians are looking at the piece of testing equipment shown in the figure above. Technician A says that this
Ilya [14]
B is your correct answer.
8 0
3 years ago
Read 2 more answers
_____ is a problem-solving technique where each problem in a database is stored with a description and keywords that identify it
babymother [125]

Answer:

Case-based reasoning.

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

A data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.

In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.

This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.

Basically, when a database management system (DBMS) receives data update requests from application programs, it simply instructs the operating system installed on a server to provide the requested data or informations.

Case-based reasoning is a problem-solving technique where each problem in a database is stored with a description and keywords that identify it. It is typically based on cognitive science and artificial intelligence.

7 0
2 years ago
An online survey is an effective way for an administrative professional to gather information. True False
Strike441 [17]

Answer:

True is the correct answer for the above question.

Explanation:

  • An online survey is done with the help of social sites that connects many people in conversation from all over the world. So to do an effective survey, it is best to choose the online medium.
  • The administrative professional is a professional, who works to do administrative tasks like managing the organization.
  • The above question-statement says that the online survey is the best survey, which is the correct statement, which is described above. Hence the answer is true for the above question.
7 0
2 years ago
What is the maximum number of columns in a spreadsheet that you can sort in one instance in software like OpenOffice Calc?
MakcuM [25]
The correct answer is D
6 0
3 years ago
Read 2 more answers
What is equivalent to 5(3x-7)
serg [7]
5(3x - 7)

distribute the 5 to both 3x and -7

15x - 35 is equivalent

hope this helps
8 0
2 years ago
Read 2 more answers
Other questions:
  • What is pressure?
    7·2 answers
  • With respect to PERT and​ CPM, slack A. is a task or subproject that must be completed. B. marks the start or completion of a ta
    9·1 answer
  • What is the numerical ratio that is equivalent to 19.2 dB?
    14·1 answer
  • What is the printout (display) of the following program? public class Test { public static void main(String[] args) { int[][] va
    9·1 answer
  • Which of the following would be useful to understand if you wanted to build a web page
    15·1 answer
  • According to the stage-gate process developed by Robert G. Cooper, _____ are the results of the previous stage and are the input
    15·1 answer
  • Ha Yoon sees funny quotes on top of images frequently in her social media feed. One day, she has an idea for one of her own. Whi
    11·1 answer
  • Fre.e points enjoy em
    7·2 answers
  • Juan is a network administrator and must set up a VPN for his company's network. To allow safe communication, he should
    13·1 answer
  • When you use the predict step in the IPDE process you
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!