Examlex
The DBA must review the database application design to ensure that transactions are _____, meaning that they mirror real-world events.
Skewed
A term describing asymmetry in the probability distribution of a real-valued random variable, indicating a deviation from the normal distribution.
Median
The middle value in a data set, which effectively divides the dataset into two halves, with one half having values above the median and the other half below.
Mean
The arithmetic average of a set of numbers, calculated by adding them together and dividing by the number of values.
Standard Deviation
A measure of the amount of variation or dispersion in a set of values, indicating how much the values deviate from the mean.
Q5: How should storage volumes be allocated for
Q6: Each table represents an attribute.<br>A) column<br>B) row<br>C)
Q20: The SQL aggregate function that gives the
Q32: In a typical star schema, each dimension
Q36: Describe the conceptual model and its advantages.
Q46: -level locks are less restrictive than database-level
Q54: _ use web-based technologies to present key
Q56: Another name for a composite entity is
Q64: All transactions must display .<br>A) atomicity, consistency,
Q85: Database activities can be divided into those