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Vikentia [17]
4 years ago
9

Explain what is a database schema and mention one example

Computers and Technology
1 answer:
Taya2010 [7]4 years ago
4 0

Answer:

Database schema is a structure that are used to represent the logical base in the database. Database schema is the logic arrangement of objects in the form of tables. It basically defines the entities and the relationship between them. Schema is the organisation of data in the database system.

It is divided into two main parts that is:

  • Logical database schema
  • Physical database schema

Example:

When we create a table with the student name then, the logical database schema contain the student name, student ID and the project name. Then, the student table basically stored in the physical database schema in the form of file.

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You have informed your users that you need to bring the machine down at the end of the day to perform routine maintenance. Howev
PSYCHO15rus [73]

Answer:

shutdown -h +15 It is time for a shutdown!

Explanation:

In a work environment where there is an admin and users connected to the server when the admin wants to Give a 15-minute delay to allow users enough time to save their work data and logout from the system. the command above shuts down after 15 minutes delay and notifies the user with "It is time to shut down!".

8 0
4 years ago
Please help
MA_775_DIABLO [31]

Answer:

Key name

How to use it

Shift

Press Shift in combination with a letter to type an uppercase letter. Press Shift in combination with another key to type the symbol shown on the upper part of that key.

Caps Lock

Press Caps Lock once to type all letters as uppercase. Press Caps Lock again to turn this function off. Your keyboard might have a light indicating whether Caps Lock is on.

Tab

Press Tab to move the cursor several spaces forward. You can also press Tab to move to the next text box on a form.

Enter

Press Enter to move the cursor to the beginning of the next line. In a dialog box, press Enter to select the highlighted button.

Spacebar

Press the Spacebar to move the cursor one space forward.

Backspace

Press Backspace to delete the character before the cursor, or the selected text.

Typing (alphanumeric) keys. These keys include the same letter, number, punctuation, and symbol keys found on a traditional typewriter.

Control keys. These keys are used alone or in combination with other keys to perform certain actions. The most frequently used control keys are Ctrl, Alt, the Windows logo key  Picture of the Windows logo key, and Esc.

Function keys. The function keys are used to perform specific tasks. They are labeled as F1, F2, F3, and so on, up to F12. The functionality of these keys differs from program to program.

Navigation keys. These keys are used for moving around in documents or webpages and editing text. They include the arrow keys, Home, End, Page Up, Page Down, Delete, and Insert.

Numeric keypad. The numeric keypad is handy for entering numbers quickly. The keys are grouped together in a block like a conventional calculator or adding machine.

The following illustration shows how these keys are arranged on a typical keyboard. Your keyboard layout might be different.

Explanation:

3 0
2 years ago
What type of computer is likely to use so-dimms, have an internal power supply, and use a desktop processor socket?
Gekata [30.6K]
Obviously, it is a laptop. So-Dimms are about half as long as Dimms, and are meant for laptops.
8 0
3 years ago
Each year, Doritos sponsors a Crash the Super Bowl contest, encouraging individuals to submit ads for Doritos to the contest. Th
monitta

Answer:

The answer is creators.

Explanation:

<em>Creators are contributors capable to inovate and share creative ideas. They are not necessarily advertising  and marketing professionals. They can have art, design, music,  and other backgrounds, but the most relevant characteristic of this group of people is their creativity.</em>

<em>They are behind all the great ideas we see at the most relevant social medias nowadays.</em>

7 0
3 years ago
Hi!
baherus [9]

Answer:

Radius = 14 cm = 0.00014 km

Circumference = 2πr = 2 × 22/7 × 14/100000 = 0.00088 km

As it went thousand times , distance covered = 0.00088 × 1000 = 0.88 km

8 0
3 years ago
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