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DBMS Theoryknowledge~10 mins

Query processing steps in DBMS Theory - Interactive Code Practice

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

Complete the code to name the first step in query processing.

DBMS Theory
The first step in query processing is [1].
Drag options to blanks, or click blank then click option'
AParsing
BFetching
CExecution
DOptimization
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing 'Execution' instead of 'Parsing'
Confusing 'Optimization' as the first step
2fill in blank
medium

Complete the code to name the step that improves query efficiency.

DBMS Theory
After parsing, the query goes through [1] to find the best way to run it.
Drag options to blanks, or click blank then click option'
AOptimization
BFetching
CExecution
DCompilation
Attempts:
3 left
💡 Hint
Common Mistakes
Selecting 'Execution' instead of 'Optimization'
Thinking 'Compilation' is a query step
3fill in blank
hard

Fix the error in naming the final step of query processing.

DBMS Theory
The last step in query processing is [1], where the query results are produced.
Drag options to blanks, or click blank then click option'
AOptimization
BParsing
CExecution
DCompilation
Attempts:
3 left
💡 Hint
Common Mistakes
Choosing 'Parsing' or 'Optimization' as the last step
Confusing 'Compilation' with execution
4fill in blank
hard

Fill both blanks to describe the query processing steps correctly.

DBMS Theory
First, the query is [1] to check syntax, then it is [2] to improve performance.
Drag options to blanks, or click blank then click option'
AParsed
BExecuted
COptimized
DCompiled
Attempts:
3 left
💡 Hint
Common Mistakes
Swapping the order of parsing and optimization
Using 'Executed' too early
5fill in blank
hard

Fill all three blanks to complete the query processing steps in order.

DBMS Theory
The query is [1], then [2], and finally [3] to get results.
Drag options to blanks, or click blank then click option'
AParsed
BOptimized
CExecuted
DCompiled
Attempts:
3 left
💡 Hint
Common Mistakes
Mixing up the order of steps
Including 'Compiled' which is not a main query step