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Juli2301 [7.4K]
3 years ago
8

Why are I/O (input/output operations) important in database environment?

Computers and Technology
1 answer:
Eddi Din [679]3 years ago
7 0

Answer:  

Database environment is created by storing the data and other related components.The input-output action takes place in the database when the reading and writing of the record units of block is to be done to and from disk unit to memory storage.

The database engine is responsible for reading action of the record before entering it to the memory and then stores it. If the data record unit is to be exported to the disk then output action takes place .It also helps in performing indexing ,vacuuming, portioning etc the information Thus, I/O is important for database.

 

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How many bits can a memory chip with the below configuration support? For full credit, show how you got the answer.
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Answer:

Total Memory= 4 KB = 4096 bytes = 32768 bits

Explanation:

<em><u>1. Data lines are 8 From D0 to D7</u></em>

so

Total memory at single address locations is 8 bits.

<em><u>2. Address lines are 12 (A0 to A11)</u></em>

There are 12 address lines but 3 out 12 are for selction of chip or memory bank.

so only 9 pins are there to address the locations on one chip.

Total No. of address locations on single chip = 2^9 = 512 locations

as 1 location is 1 byte so total memory of single chip is 512 bytes.

<u><em>3. Total Memory Bank </em></u>

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Total chips = 2^3 = 8.

<em><u>4. Total Memory </u></em>

Total size of 1 chip = 512 bytes

Total size of 8 chip = 8x512 bytes = 4096 bytes = 4096/1024 kb = 4 kb

<em>So total memory of system is 4 Kb = 4096 bytes = 32768 bits</em>

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