Question
What is the SI unit of luminous
flux?Solution
The SI unit of luminous flux is the lumen (lm), which measures the perceived power of light.
In indexing, which tree is most commonly used for disk-based indexing because it minimizes disk seeks and keeps nodes dense?
Which type of join returns only matching records from both tables?
An RDBMS provides mechanisms for data integrity, such as primary keys and foreign keys, which are generally lacking in:
ACID properties in DBMS ensure:
What is a table joined with itself called?
Which SQL clause is used to group rows based on one or more columns?
Bitmap indexes are most efficient when:
A software defect that causes a program to produce incorrect output without crashing or displaying an error message is typically classified as a:Â
In a program that manages a collection of `Employee` objects, each with a `salary` attribute, which control flow mechanism would be most efficient to fi...
Which SQL constraint ensures that a column cannot have NULL values?
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