Designing crow foot e-r diagram

Assignment Help Operating System
Reference no: EM1379153

Question: Make an IE Crow's Foot E-R diagram for the entities section and employee and the 1:N relationship between them. Suppose that a section/department does not require to have an employee, but that every EMPLOYEE is assigned to a DEPARTMENT. Include appropriate identifiers and attributes for each entity.

Give examples of binary 1:N relationships, other than those in the textbook, for (a) an optional-to-optional relationship, (b) an optional-to-mandatory relationship, (c) a mandatory-to-optional relationship, and (d) a mandatory-to-mandatory relationship. Illustrate your answer using IE Crow's Foot E-R diagrams.

 

Reference no: EM1379153

Questions Cloud

What kind of disorder does employee illustrate : He hates routine also boredom more than anything else. Thrill-seeking also impulsive actions have gotten him fired from this job. It will get him fired at many ors." What kind of disorder does employee illustrate.
Question about backbone structure : Suppose you have been hired by a mail order firm to install a backbone structure that will connect four LANs and provide a connection to the Internet.
Ethical, legal and security responsibilities : Determine some of the ethical, legal and security responsibilities health care organizations must address when they implement health care database?
Discuss role based on what you think is gender specific : Based on your knowledge of mother's also father's roles, pick a role also discuss role based on whether you think it is gender specific or not.
Designing crow foot e-r diagram : Make an IE Crow's Foot E-R diagram for the entities section and employee and the 1:N relationship between them. Suppose that a section/department does not require to have an employee.
Discussion on dns for internet operations : Discuss how do you think the DNS is important for internet operations and what would happen if the DNS of your company/orgnization or your provider or root DNS fails?
Solving a shell script issue : Determine when a script having these invisible characters are interpreted by linux or *nix shells, they are flagged as errors, since *nix uses 'n' as new lines.
Solving problem by ipv6 : Discuss and explain some of the problems NATs develop for IPsec security. Solve this problems through using IPv6?
Ethical issues of web site design : Analyze the user interaction interface of a typical website that you might wish to improve and design in terms of any ethical considerations that might require to be addressed.

Reviews

Write a Review

 

Operating System Questions & Answers

  Multilevel feedback queues and fcfs

What (if any) relation holds between the following pairs of sets of algorithms (a) Priority and SJF (b) Multilevel feedback queues and FCFS

  Calculate effective access time of system

Assuming fetches to main memory are started in parallel with look-ups in cache, calculate the effective (average) access time of this system.

  Explaining first-in-first-out scheduling

Qqueue for service (if the server process is busy servicing another request). Requests in queue are served according to the scheduling policy in use: First-In-First-Out (FIFO) scheduling.

  Explain the client-server architecture

What are the three different categories of command, support your answer by giving three examples. Give three good reasons, with valid explanation, to justify why partitioning hard disk provides a variety of advantages. Explain the client/server..

  Virtual machines

Virtual machines supported by a host operating system

  Vliw processor

VLIW processor - assembler

  How many page faults would occur under pure demand paging

How many page faults would occur under pure demand paging (all frames are initially empty), assuming four frames are available, under FIFO, LRU.

  Implementation of algorithms for process management

The Shortest Job Next (SJN) algorithm queues processes in a way that the ones that use the shortest CPU cycle will be selected for running rst.

  Find the total number of bytes in the frame

Determine how long does it take to transmit a 10baseT Ethernet frame that contains 256 bytes of data and ignore all the interframe gap that follows the frame.

  Explain how a race condition is possible

the wife calls deposit (). Describe how a race condition is possible and what might be done to prevent the race condition from occurring.

  What is the main advantage of multiprogramming

What is the main advantage of multiprogramming How does the distinction between the monitor mode and user mode function as a rudimentary form of protection (security) system What is the difference between a trap and an interrupt? What is the u..

  Stand alone child process

Forking the child process

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd