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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 we have a List class available. You can be tempted to create Stack inherit from List. Pushing an element onto stack can be achieved by adding an element to end of list and popping an element from a stack corresponds to removing an element from end of the list. But, you are also inheriting unwanted list operations which add or remove elements from arbitrary positions in list.
Atomicity : Either all functions are laid out or none are. Users could not have to think about the effect of incomplete operations. DBMS ensures this by undoing the functions
examples of fields in a database
What are the advantages of object ID? The main advantages of Object IDs are as below: i) IDs are not changing ii) IDs are completely independent of the changes in data v
Create Student DB and perform delete operation? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, co
3. (10 points) Assume that you have been presented with the following relation for the Baxter Aviation database: Charters (Pilot#, Pilot name, Aircraft ID#, #seats, Village, Fligh
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
An orchestra database consists of the following relations: CONDUCTS (conductor, composition) REQUIRES (composition, Instrument) PLAYS (Player, Instrument) Give the relational
INTRODUCTION Databases and database systems have become an essential part of our daily life. We encounter many activities that involve some interaction with a database almost
1) Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pict
What are the functions of an accumulator? The accumulator is the register associated with the ALU operations and sometimes I/O operations. It is an integral part of ALU. It hol
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