Home
Earn $100 Online Daily. Work From Home. Click Here

What is the correct answer?

4

Wait-for graph is used for

A. detecting view serializability.

B. detecting conflict serializability.

C. deadlock prevention

D. deadlock detection

Related Questions

Which of the following is not a logical database structure? The transactions like adding an employee, enrolling a student in a course… A _____ is a logical unit of database processing that includes one or… _____is a full form of SQL. An advantage of views is Which normal form is considered adequate for normal relational database… An outstanding functionality of SQL is its support for automatic_____… Relations produced from an E-R model will always be In b-tree the number of keys in each node is than the number of its children. Consider the join of relation R with a relation S. If R has m tuples and… In a multi-user database, if two users wish to update the same record… The keyword to eliminate duplicate rows from the query result in SQL is ______is a preferred method for enforcing data integrity Wait-for graph is used for If an entity can belong to only one lower level entity then the constraint… The data in the database at a particular moment of time is called the… What is a disjoint less constraint? The part of a database management system which ensures that the data remains… Which is the best file organization when data is frequently added or deleted… The clause alter table in SQL can be used to _____ command can be used to modify a column in a table According to the levels of abstraction, the schema at the intermediate… The size of a data item is called its _______, which can be a field of… Which of the following is a reason to model data? In an E-R diagram double lines indicate The statement that is executed automatically by the system as a side effect… Maximum height of a B+ tree of order m with n key values is Grant and revoke are _____ statements. Between DRAM and magnetic disk storage another form of memory, called… Union operator is a :