Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Describe DROP TABLE command of SQL along with both the options - CASCADE and RESTRICT.
DROP TABLE command - This command drops the specified table. Dropping a table also drops indexes and grants related with it. Objects built on dropped tables are marked invalid and cease to work.
CASCADE and RESTRICT options - The DROP TABLE with RESTRICT option destroy the table unless a few view or integrity constraint refer to the given table; if so, the command fails. Other than along with the CASCADE option, any referencing views or integrity constraints are (recursively) dropped as well.
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value out
Explain Two phase locking protocol A transaction is consider as to follow the two-phase locking protocol if all locking operations precede the first unlock operation in the tra
1.Why we need data mining? Give an example to illustrate your answer. 2. Why data mining is considered as "misleading name"? 3. Distinguish the difference between database an
What is hashing file organization? In the hashing file organization, a hash function is computed on some attribute of every record. The result of the hash function specify in
explain the level architectures of the database management system
What is DAG? The class-subclass relationship is shown by a directed acyclic graph.eg: employees can be temporary or permanent. We might be create subclasses temporary \and perm
Creating a view: A query can be embedded within the CREATE VIEW STATEMENT A query can have complex select statements containing join, groups and sub- queries A quer
Question 1 Create a table student with attributes student name, roll number, total marks and percentage. Do the following operations Insert details in to the table Update
why older data models are being replaced by new data models.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd