Computers and Technology, 16.06.2020 23:57 Bladen6579

Drawing E-R Diagrams Companies, identified by Company ID and described by Company Name and Industry Type, hire consultants, identified by Consultant ID and described by Consultant Name and Consultant Specialty. Consultant Specialty is a multivalued attribute. Assume that a consultant can work for only one company at a time, and sometimes they take breaks and are not working for any company. Company can also have multiple consultants working for them, or at times, they have no need of consultants. Draw an ERD for this situation, including the entities, relationships, and proper names for the attributes, primary keys, as well as the names for the relationships.

Situation 1:

Now, consider that each time a consultant works for a company, a contract is written describing the terms for this consultant engagement. Contract is identified by a composite identifier of Company ID, Consultant ID, and Contract Date. The contract should also include the hourly rate at which the consultant is paid. Assuming the consultant can still work for only one company at a time, redraw the ERD for this situation.

Situation 2:

As a final solution, now consider that although a consultant can work for only one company at a time, we now need to keep the complete history of all consulting engagements for each consultant and company for auditing purposes, so that even when the consultant is no longer in the industry or the company is bankrupt, IRS can still track the contract records. Draw an ERD for this final situation.

Answers: 1

Show answers

Another question on Computers and Technology

Computers and Technology, 22.06.2019 03:10

This program reads a file called 'test.txt'. you are required to write two functions that build a wordlist out of all of the words found in the file and print all of the unique words found in the file. remove punctuations using 'string.punctuation' and 'strip()' before adding words to the wordlist. write a function build_wordlist() that takes a 'file pointer' as an argument and reads the contents, builds the wordlist after removing punctuations, and then returns the wordlist. another function find_unique() will take this wordlist as a parameter and return another wordlist comprising of all unique words found in the wordlist. example: contents of 'test.txt': test file another line in the test file output: ['another', 'file', 'in', 'line', 'test', 'the']

Answers: 1

Answer

Computers and Technology, 23.06.2019 19:00

Now youâ€™re on your own. include a short summary of this section with plots in your lab report. write a matlab script file to do steps (a) through (d) below. include a listing of the script file with your report. 1 the soundsc(xx,fs) function requires two arguments: the first one (xx) contains the vector of data to be played, the second argument (fs) is the sampling rate for playing the samples. in addition, soundsc(xx,fs) does automatic scaling and then calls sound(xx,fs) to actually play the signal. mcclellan, schafer, and yoder, dsp first, 2e, isbn 0-13-065562-7. prentice hall, upper saddle river, nj 07458. c 2015 pearson education, inc. 4 mcclellan, schafer and yoder, signal processing first. prentice hall, upper saddle river, new jersey, 2003. c 2003 prentice hall. (a) generate a time vector (tt) to cover a range of t that will exhibit approximately two cycles of the 4000 hz sinusoids defined in the next part, part (b). use a definition for tt similar to part 2.2(d). if we use t to denote the period of the sinusoids, define the starting time of the vector tt to be equal to t , and the ending time as ct . then the two cycles will include t d 0. finally, make sure that you have at least 25 samples per period of the sinusoidal wave. in other words, when you use the colon operator to define the time vector, make the increment small enough to generate 25 samples per period. (b) generate two 4000 hz sinusoids with arbitrary amplitude and time-shift. x1.t / d a1 cos.2

Answers: 1

Answer

Computers and Technology, 23.06.2019 20:00

What multimedia system creates an immersive, real-life experience that the user can interact with?

Answers: 1

Answer

Computers and Technology, 24.06.2019 15:30

How do i change the size of my bookmarks in my bookmarks bar in google chrome? ? plz hlp me

Answers: 2

Answer

You know the right answer?

Drawing E-R Diagrams Companies, identified by Company ID and described by Company Name and Industry...