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Explain the term - Adjustment of inheritance
The inheritance can be enlarged as object design progresses by changing class structure. The designer should do:
i) Adjust or rearrange classes and operations
ii) Abstract common behavior out of groups of the classes
iii) Use delegation to share the behaviour when inheritance is semantically wrong.
Vertical Fragmentation- Vertical fragmentation groups together only those attributes in a relation that are used jointly by various important transactions. A vertical fragment is d
NEED FOR A DATABASE MANAGEMENT SYSTEM A Database is a structured, persistent collection of data of an organisation. The database management system (DBMS) manages the database o
What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Write a short note on oracle Instance? Oracle Instances: An instance is the (executed) Oracle software and the memory they use. It is the instance which manipulates the data s
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
Timestamp Ordering Protocol A timestamp is a tag that can be attached to any transaction or any data item, which indicates a specific time on which the transaction or data item
WHAT IS DBMS
construct a B+ tree for the following set of key value (2,3,5,7,11,19,23,29,31) in ascending order where the pointers that will fit in one node is as follows:A. four B. six C. eigh
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