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3 years ago

The database must be carefully planned to allow useful data manipulation and report generation.

Computers and Technology

1 answer:

Lemur [1.5K]3 years ago

7 0

Answer:

True.

Explanation:

When creating a database it should be carefully planned so that we can easily do data manipulation and report generation if not designed carefully these processes will become difficult.

Some mistakes in the creation of database.

No Normalization.
Not treating the data model as a breathing or living organism.
Not choosing primary keys carefully.
No or little use of foreign Keys and check constrains.

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Look at the following structure declaration.

myrzilka [38]

Answer:

B. a tag

Explanation:

In the structure definition given below:

struct Employee

{

string name;

int idNum;

};

Employee corresponds to the tag of the structure. The tag is used to create additional instances of the structure. For example:

struct Employee e1;

struct Employee e2;

name and idNum are members of the Employee structure and are referenced using the dot notation. e.g.,

struct Employee e1;

e1.idNum=1;

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3 years ago

Which kind of image is indispensable and needs added text to go with it

grigory [225]

It may be an image that is on the internet, without a caption visually impaired will not understand

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2 years ago

Gwen has a photo she’d like to display in her speech, but she forgot to digitize it. She only has a hard copy, and she doesn’t h

skelet666 [1.2K]

Answer:

A. Document camera

Explanation:

Document cameras, which are also known as visual presenters or visualisers, digital overheads, or docucams. They are real-time image capture devices for displaying an object to a large audience. Just like an opaque projector, a document camera is able to magnify and project the images of actual, three-dimensional objects, as well as transparencies. They are, simply put, high resolution web cams, that is mounted on arms so as to facilitate their placement over a page.

This makes it easier and convenient for a teacher, lecturer or presenter to write on a sheet of paper or to display a two or three-dimensional object while the audience watches.

In Theory, the document camera can be used to display all objects.

Gwen only needs to place her photo under a document camera and deliver her speech while the image will be displayed for the class.

5 0

2 years ago

Given a floating-point formal with a k-bit exponent and an n-bit (fraction, write formulas for the exponent E, significant M, th

ANEK [815]

Answer:

A) Describe the number 7.0 bit

The exponential value ( E ) = 2

while the significand value ( M ) = 1.112 ≈ 7/4

fractional value ( F ) = 0.112

And, numeric value of the quantity ( V ) = 7

The exponent bits will be represented as : 100----01.

while The fraction bits will be represented as : 1100---0.

B) The largest odd integer that can be represented exactly

The integer will have its exponential value ( E ) = n

hence the significand value ( M )

= 1.11------12 = 2 - 2-n

also the fractional value ( F ) =

0.11------12 = 1 – 2-n

Also, Value, V = 2n+1 – 1

The exponent bits will be represented as follows: n + 2k-1 – 1.

while The bit representation for the fraction will be as follows: 11---11.

C) The reciprocal of the smallest positive normalized value

The numerical value of the equity ( V ) = 22k-1-2

The exponential value ( E ) = 2k-1 – 2

While the significand value ( M ) = 1

also the fractional value ( F ) = 0

Hence The bit representation of the exponent will be represented as : 11---------101.

while The bit representation of the fraction will be represented as : 00-----00.

Explanation:

E = integer value of exponent

M = significand value

F = fractional value

V = numeric value of quantity

A) Describe the number 7.0 bit

The exponential value ( E ) = 2

while the significand value ( M ) = 1.112 ≈ 7/4

fractional value ( F ) = 0.112

And, numeric value of the quantity ( V ) = 7

The exponent bits will be represented as : 100----01.

while The fraction bits will be represented as : 1100---0.

B) The largest odd integer that can be represented exactly

The integer will have its exponential value ( E ) = n

hence the significand value ( M )

= 1.11------12 = 2 - 2-n

also the fractional value ( F ) =

0.11------12 = 1 – 2-n

Also, Value, V = 2n+1 – 1

The exponent bits will be represented as follows: n + 2k-1 – 1.

while The bit representation for the fraction will be as follows: 11---11.

C) The reciprocal of the smallest positive normalized value

The numerical value of the equity ( V ) = 22k-1-2

The exponential value ( E ) = 2k-1 – 2

While the significand value ( M ) = 1

also the fractional value ( F ) = 0

Hence The bit representation of the exponent will be represented as : 11---------101.

while The bit representation of the fraction will be represented as : 00-----00.

8 0

3 years ago

A company wants to ensure that the validity of publicly trusted certificates used by its web server can be determined even durin

Natali [406]

Answer: OCSP

Explanation:

Ocsp(online certificate status protocol) is used to maintain the security status of the server and also to determine the status of SSL/TLS certificates used by the webserver.

5 0

3 years ago