Question

Let R be a binary relationship between the entity sets E1 and E2. Consider the following...

Let R be a binary relationship between the entity sets E1 and E2. Consider the following instances for E1, E2, and R:

E1 = {a1, a2, a3, a4, a5, a6}
E2 = {b1, b2, b3, b4, b5, b6, b7}
R = {(a1, b1), (a2, b1), (a3, b2), (a4, b4), (a5, b6), (a6, b6)}

Draw the E/R diagram for E1, E2 and R indicating the strongest constraints (most restrictive) in terms of key and participation constraints you can define such that the above instances of E1, E2 and R are valid. Explain why/how any further constraint would be violated by the above instances.

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
Let R be a binary relationship between the entity sets E1 and E2. Consider the following...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • The data on the table follow an exponential model y-aebx, Fill in the blanks 0.4 800...

    The data on the table follow an exponential model y-aebx, Fill in the blanks 0.4 800 [a1] [b1] [c1] [d1] 0.8 975 [a2] [b2] [c2] [d2] 1.2 1500 [a3] b3] [c3] [d3] 1.6 1950 [a4] b4] [c4] [d4] 2 2900 [a5 [b5] [c5] [d5 2.3 3600 [a6] [b6] [c6] [d6] Sum [a b c7] [d7] The average value of w is [e1] The average value of z is [e2] a1- [e3] a0- [e4] а» [e5] b- [e6]

  • Urgent!! Please show mark all correct answers and also find values of a1,a2,a3,a4,a5,a6 and b1,b2,b3,b4,b5,b6. Thank...

    Urgent!! Please show mark all correct answers and also find values of a1,a2,a3,a4,a5,a6 and b1,b2,b3,b4,b5,b6. Thank you! (1 point) The second order equation x?y" + xy' +(x2 - y = 0 has a regular singular point at x = 0, and therefore has a series solution y(x) = Σ CGxhtr P=0 The recurrence relation for the coefficients can be written in the form of n = 2, 3, ... C =( Jan-2 (The answer is a function of n and...

  • Q5) A combinational circuit with internal signals and signal propagation delays Shown below is a combination...

    Q5) A combinational circuit with internal signals and signal propagation delays Shown below is a combination circuit that takes 5 inputs (LO L1, L2, L3, and Comp), and generates 4 outputs (L4, L5, L6, し7) Please design the entity as well as the test bench for this combinational circuit. In your design, please set up internal signals Al, B, A2, B2, A3, B3, A4, B4, A5, B5, A6, B6, A7 and B7 Your entity design is Your test bench design...

  • Help me to solve the table . i really need anwers to this question . I...

    Help me to solve the table . i really need anwers to this question . I have already poated this question but you havent reply me back . Answer as soon as possible . QUESTION 2 Provide your answers in the text box provided below (Example a1 = xx.xx) Complete the table and calculate the stability of the six layers of the atmosphere between the observations. Assume DAR IS 10'C per 1000m and a MAR of 6°C per 1000m. Table...

  • assignament for excel...is there any way to upload the table this creates?? In this activity, we...

    assignament for excel...is there any way to upload the table this creates?? In this activity, we use data from a random sample of women who participated in a study in 1986 at the Baystate Medical Center in Springfield, MA. (Source: Hosmer and Lemeshow (2000), Applied Logistic Regression: Second Edition.) For the 30 women in the study with a history of premature labor, a proportion of 18/30 = 0.60 (60%) had babies with low birth weight. For the remaining 159 women,...

  • Suppose the initial conditions of the economy are characterized by the following equations. In this problem,...

    Suppose the initial conditions of the economy are characterized by the following equations. In this problem, we assume that prices are fixed at 1 (the price index is 100 and when we deflate, we use 1.00) so that nominal wealth equals real wealth. 1) C = a0 + a1 (Y - T) + a2 (WSM) + a3 (WRE) + a4 (CC) + a5 (r) 1') C = a0 + a1 (Y - 200) + a2 (10,000) + a3 (15,000) +...

  • Using Table 2 (average data of 10 brands x 10 attributes), (a) create a positioning map...

    Using Table 2 (average data of 10 brands x 10 attributes), (a) create a positioning map by running SPSS, (b) put the overall mean (mean of all attributes per brand) on each brand, and (c) discuss which position must be appropriate for a new brand into the market. Table 2. Brand Positioning Mean Scores and Dimension Coordinates Mean scores (B = Brand and A = Attribute) BRAND A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 B1 3.87 3.13...

  • Calculate the commission based on the sales data in column B and insert the calculated commission...

    Calculate the commission based on the sales data in column B and insert the calculated commission into column C using the rules in the table below. Use a nested IF statement to solve this problem (Can you write the IF Statement? Thank you! I also formatted it to how it would look in an excel doc). Column A                            Column B                  Column C A1 SALESPERSON B1 SALES C1 COMMISSION A2 Anderson B2 1255 C2 A3 Kwan B3 235 C3 A4 Kean...

  • C programming . Create a tree of processes in the form of an inverted V with...

    C programming . Create a tree of processes in the form of an inverted V with two process chains (A and B) as shown in next figure: - To create processes, the program must use the fork () system function and test if error occurs, not being allowed to use the system () function. - Each process must wait for its child processes to finish before it finishes itself (process Xi waits for process X (i + 1) in the...

  • For the following two datasets labeled y1 and y2 match one quantity in column A with...

    For the following two datasets labeled y1 and y2 match one quantity in column A with one quantity in column B. The sample means and variances are labeled as y1, y2, S12 and S22. The population means and variances from which they were drawn are labeled μ1,μ2, σ12, and σ22. Assume that the two samples are independent random samples. H0: μ1=μ2 against the alternative Ha: μ1≠μ2 using significance level α=.01. Using the data from problem 1 provide the following information...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT