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GarryVolchara [31]
2 years ago
8

Differenciate between foreign key and primary key in database.

Computers and Technology
1 answer:
enot [183]2 years ago
3 0

Answer:

A primary key is utilized to guarantee the information in the particular segment is interesting. A foreign key is a section or gathering of segments in a social data set table that gives a connection between information in two tables. It particularly recognizes a record in the social information base table.

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GaryK [48]
It gains purchasing power. Less money in circulation = more value.
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3 years ago
The computer uses unallocated space for what​
finlep [7]

A computer uses unallocated space also know as free space to keep a file that has been deleted in its disk until a new file takes it spot and overwrites it.

3 0
3 years ago
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Everybody at a company is assigned a unique 9 digit ID. How many unique IDs exist?
timama [110]

Answer:

3,265,920 unique ID exist.

Explanation:

The nine digits are from 0 to 9, there are ten bits from 0 -9,

0, 1, 2, 3, 4, 5, 6, 7, 8, 9

The first is select from the highest bit (9), and the second is selected at random from 0 - 9, the third bit to the last must be unique and different from each other;

number of unique IDs = 9 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2

Multiplying the nine bits of unique IDs = 3,265,920.

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3 years ago
Which tools allows you to see the edition, version and memory use by windows 10?
cricket20 [7]

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There is alot do u want them all?

6 0
3 years ago
1. Target area range is a survey of what lies about __________ seconds ahead of the vehicle. A. 5-10 B. 10-20 C. 20-30 D. 40-50
pshichka [43]

Answer:

Target area range is a survey of what lies about 12-20 seconds ahead of the vehicle. Correct Answer is B. (10-20 second)

Explanation:

Target area range is the space between your vehicle and the target area. A target area is an area on the roadway where the target is located. A target can be anything such as a car, a traffic signal, a blackhead, etc.

Target area range is also a section of roadway where the target is located and the area to the left and right of the target area

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