|D.||Unauthorised usage of data file|
Explanation:One approach for preventing deadlocks is to impose an ordering of all data items, and to require that a transaction lock data items only in a sequence consistent with the ordering.
|C.||Hiding||D.||All of the above
Explanation:This is Primary Advantage of Views in Database
Explanation:Decision Tree Classifier is a simple and widely used classification technique. It applies a straightforward idea to solve the classification problem. Decision Tree Classifier poses a series of carefully crafted questions about the attributes of the test record. Each time time it receive an answer, a follow-up question is asked until a conclusion about the class label of the record is reached.
|A.||1 − dimension
||B.||2 − dimensions
|C.||3 − dimensions
Explanation:A Cross tab is A layout of data in rows, columns, and pages. Dimension members are listed across the first row and down the first column; the data for measures appears in the cells that form the body of the cross tab. A cross tab can be used to display summary information and show how data varies across dimensions, such as sales by region by month. A cross tab is sometimes called a matrix.
|A.||Sliding window protocol
|B.||One phase locking protocol
|C.||Two phase locking protocol
|D.||Time stamp ordering protocol
Explanation:The Thomas Write rule is a rule in time stamp-based concurrency control. It can be summarized as ignore outdated writes.