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!
Explain the ACID properties of a transaction
Ans: ACID properties are a significant concept for databases. The ACID stands for Atomicity, Consistency, Isolation, and Durability.
Atomicity: Atomicity means either all operations of transaction are reflected properly in the database or none are.
Consistency: Consistency means execution of a transaction in isolation (that is with no other transaction executing concurrently) preserves the consistency of the database
Isolation: Although multiple transactions may execute concurrently the system assures that for each pair of transaction Ti and Tj, it appears to Ti that either Tj that either Tj finished execution previous to Ti started or Tj started execution after Ti finished. So each transaction is unaware of other transactions executing simultaneously in the system.
Durability: later than a transaction completes successfully, the changes it has made to the database persist, even if there are system failures.
What is relationship instance ? Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
Explain nested relations? Nested relations The assumption of INF is a natural one in the bank examples we have considered. However, not all applications are best modelled
Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w
State the process of Rearranging Classes and Operations The various, yet similar operation of different classes can be slightly modified thus that they can be covered by a sin
State the meaning of Object Representation The term object representation means "to represent object with the help of objects model symbols". Implementing objects is too simp
imagery
Retrieve the S&S In-Chapter Database (in Microsoft Access format) from the text's Web site (or create the tables in Table 4-5 in a relational DBMS product). Write queries to answer
Which method of access uses key transformation? A Hash method of access uses key transformation.
what is cascading? what is rollback cascading? please explain in detail
Define the Traditional System Analysis and Design Traditional System Analysis and Design (SAD) have three basic life cycle models. A typical software lifecycle consists of the
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