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In object oriented design, which steps must designer take to adjust inheritance?
To readjust inheritance following steps should be taken:
i) Rearrange and adjust the classes operations to increase the inheritance.
ii) Abstract ordinary behaviour out of sets of classes.
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Extend your CREATE TABLE statement from problem 3 with referential integrity constraints. Updates and deletes on related rows are restricted. 6. From examination of the sample data
If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events
Java program for horrizontal fragmentation in distributed database
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
What are the advantages of by using an index and what are its disadvantages ? In difference, if the search key of a secondary index is not a candidate key, it is not sufficient
What is 2NF? A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.
Define two-phase locking protocol. Ans: Two-phase locking is significance in the context of ensuring that schedules are serializable. The two-phase locking protocol defines a p
Question: (a) One of the steps in the five-step problem-solving model is implementation. Implementation is considered a key step in the problem-solving model. A problem may be
What is called block-level striping? Block level striping stripes blocks across many disks. It treats the array of disks as a large disk, and provides blocks logical numbers
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