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Jlenok [28]
2 years ago
10

_____ is a problem-solving technique where each problem in a database is stored with a description and keywords that identify it

.
Computers and Technology
1 answer:
babymother [125]2 years ago
7 0

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.

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are there any hexadecimal digits that cannot be created using 4 bits? how many bits would you need to represent the hexadecimal
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<h3>what is hexadecimal?</h3>

The term hexadecimal refers to a number systems in base 16. Most number systems are in decimal or base ten however hexadecimal is a kind of number system that is in base 16. Hexadecimal has the base ten numbers from 0 to 9 and additional letters A, B, C, D , E, and F

<h3>How to convert to binary to hexadecimal</h3>

(1001 0011 1101 1010) base 2

1001= 8+0+0+1=9

0011=0+0++2+1=3

1101=8+4+0+1=13=D

1010=8+0+2+0=10=A

bringing the values together gives

93DA

Read more on hexadecimal here: brainly.com/question/11109762

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3 years ago
Don wishes to swap the values of the variables x and y in his program. He adds a line of code which sets the value of x to the v
12345 [234]

Answer:

The correct answer is (c): The value of both x and y will be set to the original value of y.

Explanation:

Let suppose, we assign some value to variable x and to variable y i.e.

var x=10

vary y=15

Then Don adds a line of code which set the value of x to value of y i.e.

x=y

here it is mean that value of x become 15.

So after this line the value of x is 15 and y is also 15

Then he also added a line of code which set the value of y to value of x. i.e.

y=x

By adding this line of code, the value of y is 15 because x is equal to 15.

Therefore, the value of both x and y will be set to the original value of y.

Why other option are not correct

a. After swapping the value of both variable it is impossible that both variable retain original value in it.

b. this option is only true if in this first line he set the value of y to value of x and in the second line set the value of x to value of y.

d. When you swap two values, there is need of third variable for swapping, when you will swap the value only between two variable, only one variable value will be retained and intended swapping will not be performed

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