10 Questions
What is the primary function of a parser in query processing?
Checking query syntax compliance
Which factor is a major contributor to the total time cost in executing a query?
Disk accesses
Why is disk access considered a predominant cost in query processing?
Disk access is generally slower than in-memory operations
What is the reason for the cost of writing a block being greater than reading a block in query processing?
Writing confirmation check
What does the scanner do during query processing?
Identifies query tokens
What is the cost of linear search in the best case scenario?
(br / 2)
What condition allows the system to stop searching in linear search?
Selection based on a primary key attribute
Which algorithm is faster between linear search and binary search?
Binary search
What is the primary advantage of pipelining over materialization in evaluating expressions?
Reduces number of intermediate temporary relations
What is query optimization primarily focused on?
Selecting the most efficient query evaluation plan
Learn about the process of converting a high-level query written in SQL into an efficient execution plan for data manipulation. Explore how queries are scanned, parsed, and validated to create a correct syntax for database operations.
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