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DBMS Theoryknowledge~10 mins

Why storage organization affects query performance in DBMS Theory - Test Your Understanding

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Practice - 5 Tasks
Answer the questions below
1fill in blank
easy

Complete the sentence to explain why storage organization matters for query speed.

DBMS Theory
Storage organization affects query performance because it determines how quickly data can be [1].
Drag options to blanks, or click blank then click option'
Adeleted
Bignored
Cretrieved
Dencrypted
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing options unrelated to data access like 'deleted' or 'encrypted'.
2fill in blank
medium

Complete the sentence to describe a storage method that improves query performance.

DBMS Theory
Using [1] storage organizes data in a way that groups related records together, speeding up queries.
Drag options to blanks, or click blank then click option'
Aindexed
Brandom
Ccompressed
Dencrypted
Attempts:
3 left
💡 Hint
Common Mistakes
Confusing compression or encryption with methods that speed up data access.
3fill in blank
hard

Fix the error in the sentence explaining storage impact on query performance.

DBMS Theory
Queries run slower if data is stored [1] because the system must scan irrelevant data.
Drag options to blanks, or click blank then click option'
Aindexed
Bsequentially
Ccontiguously
Drandomly
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing 'sequentially' or 'indexed' which actually improve speed.
4fill in blank
hard

Fill both blanks to complete the explanation of storage and query speed.

DBMS Theory
When data is stored [1], queries can [2] only the needed parts, improving performance.
Drag options to blanks, or click blank then click option'
Aclustered
Bscan
Cpartitioned
Dignore
Attempts:
3 left
💡 Hint
Common Mistakes
Mixing up 'clustered' and 'partitioned' or confusing 'ignore' with 'scan'.
5fill in blank
hard

Fill all three blanks to explain how storage affects query efficiency.

DBMS Theory
Efficient storage uses [1] to organize data, [2] to reduce data size, and [3] to speed up data lookup.
Drag options to blanks, or click blank then click option'
Aindexes
Bcompression
Ccaching
Dencryption
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing encryption which secures but does not speed up queries.