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gizmo_the_mogwai [7]
3 years ago
15

A data dictionary is sometimes described as "the database designer's database" because it records the design decisions about tab

les and their structures.
True or false?
Computers and Technology
1 answer:
MrRa [10]3 years ago
4 0

Answer:

True is the correct answer for the above questions.

Explanation:

  • A data dictionary is used to hold the structure and definition of the database. It is because it is used to hold information about the database or operational database.
  • It is a set of schema through which the user can understand the structure of the database. It can be used to define the metadata also. The metadata detailed the data of a database.
  • The above question-statement also wants to states about the same which is described above which is the definition of the data dictionary. Hence it is a true statement.
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Professor Gig A. Byte needs to store text made up of the characters A with frequency 6, B with frequency 2, C with frequency 3,
Luden [163]

Answer:

This is not true

Explanation:

The optimal Huffman code is used to encrypt and compress text files. It uses fixed-length code or variable-length code for encryption and compression of data.

The professor's character code is similar to Huffman's variable-length coding which uses variable length od binary digits to represent the word strings. The file size of the text file above is;

= 6 x 1 + 2 x 2 + 3 x 2 + 2 x 2 + 8 x 1 = 28 bits

This would be the same for both cases.

The encrypt would be the problem as the encoded and decoding of the characters B and E may cause an error.

8 0
3 years ago
The logical view Select one: a. shows how data are organized and structured on the storage media. b. presents an entry screen to
Nana76 [90]

Answer:

The answer is "Option d'.

Explanation:

The database provides a single graphical view of the data, but it  provides the facility to use logical view concept, that uses by view command, that uses the dataset to provide a logical view, that shows data according to user condition, and certain options were incorrect which can be described as follows:

  • In option a, In logical viewing data, it is not used.
  • In option b, It doesn't represent entry screen it simply shows detail.
  • In option c, this command doesn't allow you to create duplicate data.
4 0
3 years ago
Annie needs to provide a form field that will allow users to select from a predefined list of options but without the ability to
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Answer:

Drop down list

Explanation:

You have not listed what the possible answers are, however a drop down list would be an option to accomplish this.

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