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valentinak56 [21]
2 years ago
7

Which type of chart is preferable when you are dealing with a timeframe?

Computers and Technology
1 answer:
ANTONII [103]2 years ago
7 0

Answer:

Pie chart

Explanation:

Just get to know

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To clear a filter, click the ____ button on the home tab and then click clear all filters.
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Advanced button

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3 years ago
Helppppp ASAPPPP!!!!
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Answer:

I think it might be archive the less used data

Explanation:

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2 years ago
Describe the three-schema architecture. Why do we need mappings among schema levels? How do different schema definition language
VARVARA [1.3K]

Answer:

Three Scheme architecture contains internal level, conceptual level, and external level.

In the internal level physical structure of the database described. The internal Schema is also known as physical Schema, as it is used to define the data that stored in a block. Internal Schema describes a sophisticated level of data structure in detail.

The conceptual level design of the database has described, and it is known as a logical level. The conceptual level describes the whole structure of the database. It describes the relationships among the data. Implementation of data are hidden in a theoretical level

On the external level, databases contain schemas that represent a different view of the database. Each describes the database that the user interested in and hides the remaining database. The external database is also known as view schema.

Explanation:

The mappings between schema levels happen due to visualization and schema matching. DBMS has three schema level.

In the attached diagram

It shows the DBMS architecture.

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Mapping takes more time to transfer data in small DBMS.

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In Conceptual / Internal mapping, response transforms from conceptual to internal level.

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