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Describe the term- State Diagram
State Diagram: An object could receive a sequence of the input instructions. The state of the object can differ depending upon sequence of input instructions. If we draw diagram that will represent all processes (input) and their output (states) then that diagram is called as state diagram. Processes are represented by arrow symbol and states by oval symbol. For illustration, screen of an ATM machine has many states such as main screen state, process transaction state, request password state.
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
1.Suppose you are given a dataset that consists of a random sample of tasters, on which the following variables were obtained: (y) Zpref = taste preference for green beans store
describe objectivde of file organisation
What is conceptual model ? A conceptual model is a independent of both hardware and software.
Use inheritance as an implementation technique when you are going to use inheritance as an implementation technique, you can achieve same goal in a safer way by making one cla
First Normal Form and second normal form First Normal Form (1NF) A relation is said to be in 1NF if it having no non-atomic values and each row can give a unique combinat
Explain the Recoverable Schedule A recoverable schedule is one in which for each pair of transactions Ti and Tj such that Tj reads a data item formerly written by Ti, the comm
entity relationship diagram for online examination system
lock and types of lock
What is DataWarehousing? Subject-oriented, meaning that the data in the database is organized so that all the data elements relating to the similar real-world event or object
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