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Describe the advantage of State chart Diagram
A state chart represents a state machine, emphasizing flow of control from one state to other. A state machine is a behaviour which specifies sequence of states that an object passes through during life time in response to events together with its response to those events. A state is a situation / condition during object's life which performs some activity or waits for some event. It contains simple states, transitions, composite states, actions, and events. The notation for multiple states depending on action / events based on set of activities is shown as:
Figure: State diagram for multiple activities
Explain Candidate key? Candidate Key - A candidate key is a minimal superkey, that can be used to uniquely identify a tuple in the relation.
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
What is horizontal fragmentation? Horizontal fragmentation divides the relation by assuming every tuple of r to one or more fragments
I need web security expert , website management Project Description: i want professional for the below . website management server management database management
Problem 1. Create a PL/SQL program to insert data into student table and display the details of the student having Reg.No 1010 Writing a PL/SQL program to Insert data
List any two significant differences between a file processing system and a DBMS. File Processing System vs. DBMS Data Independence - Data independence is the capacity t
what is the need of a log in dbms
With the linear commit protocol, sites are connected in a chain, and the subtransaction at the left-hand end of the chain initiates the protocol. Propose a crash recovery protocol
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
What is a value? A data value is used for identity. This form of identity is used in relational systems.eg: The primary key value of a tuple recognize the tuple.
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