4. The following ER Diagram characterizes the miniworld of an emergency center StormEvent StormimpactType tid www....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
4. The following ER Diagram characterizes the miniworld of an emergency center StormEvent StormimpactType tid www. sid date 0..* 0..* typeName comments [0..*] /noEvents This Year 1..1 0..* StormCenter lid lat 0..* long time damage County cid 1..1 cName sheriffs Office street no city zip a) State which attributes are simple, composite, multi-valued, and derived. b) State the cardinality ratios and participation constraints of each relationship and describe what it implies. c) Draw a relational schema for this miniworld. Include all primary keys and all foreign keys. 4. The following ER Diagram characterizes the miniworld of an emergency center StormEvent StormimpactType tid www. sid date 0..* 0..* typeName comments [0..*] /noEvents This Year 1..1 0..* StormCenter lid lat 0..* long time damage County cid 1..1 cName sheriffs Office street no city zip a) State which attributes are simple, composite, multi-valued, and derived. b) State the cardinality ratios and participation constraints of each relationship and describe what it implies. c) Draw a relational schema for this miniworld. Include all primary keys and all foreign keys.
Expert Answer:
Related Book For
Data Modeling and Database Design
ISBN: 978-1285085258
2nd edition
Authors: Narayan S. Umanath, Richard W. Scammel
Posted Date:
Students also viewed these programming questions
-
What does the concept of Ru mean? a . ) A person focused on duty b . ) A person engaged in truthful action c . ) A person who is humane in their thoughts and actions d . ) A person who fights for the...
-
Developments in Technology Light is incident from air on the end face of a multimode optical fibre at angle of incidence as shown below. n n 1 2 The refractive indices of the core and cladding are...
-
How have the ADA and Title IX legislative acts influenced the sport industry? Provide specific examples.
-
For the standard deductions, there are specified contribution tables to be followed as discussed in the previous modules. More examples: 1. Compute for Tita Pau's monthly, semi-monthly, weekly and...
-
Assume that you are running four-point bending tests on a number of identical specimens of the same length and cross section, but with increasing distance between the upper points of loading. What...
-
How would you prioritize actions in a risk assessment? Would you look at: Impact of the risk? Probability of the risk? Public concerns? Perceptions of risk? Stakeholder expectations? Other concerns?
-
Which statement is false? a. SAS No. 99 does not mention forensic accounting. b. SAS No. 99 does not require auditors to make inquiries of "others" as opposed to management. c. Many of the companies...
-
The following two items appeared on the Internet concerning the GAAP requirement to expense stock options. WASHINGTON, D.C.February 17, 2005 Congressman David Dreier (RCA), Chairman of the House...
-
Kane Candy Company offers a coffee mug as a premium for every ten $1 candy bar wrappers presented by customers together with $2. The purchase price of each mug to the company is $1.80; in addition it...
-
A comparison is shown between yards rushing for the first and last games of the season for 10 different football teams. Which team is best? And, yes, this is a trick question-can you find the trick?
-
8.38 A Corporation is considering purchasing a machine that would cost $451,260 and have a useful life of 6 years. The machine would have a salvage value of $107,270 at the end of the project. The...
-
1) Calculate a 6% semi-annual coupon note maturing four years. The maturity value is $1,000. Maturity (Years) Zero Rates (%) 0.5 2.21 1.0 2.74 1.5 3.11 2.0 3.70 2.5 3.90 3.0 4.05 3.5 4.27 4.0 4.50
-
a) The following information is available for periods 1-3 for Jireh Company Shs. Unit selling price 40 Unit variable cost 22 Fixed cost per each period 600,000 The company produces only one product....
-
Your company leases a copier. The contract states that you must pay the leasing company Rs.3,000 per year and Rs.0.005 per copy. Required: A. Write the equation to predict estimated total lease cost....
-
Explain the mechanisms of gene regulation by transcription factors, chromatin remodelers, and non-coding RNAs, including enhancer-promoter interactions, transcriptional networks, and...
-
under FIFO method, were the per unit costs from last period for Material and conversion Costs higher or lower than the current period? what might be happening to cause this?
-
Comment on any specific cost accounting-related information in the MD&A report. For example, management often explains higher or lower than expected performance in this section of the filing. Does...
-
-4 1 9. Let A = Find A-1, (A") and verify that (A")= (A-1)".
-
Consider the relation schema STUDENT (Sid, Shoe_size, Marital_status) F: fd1: Sid Shoe_size;...................fd2: Sid Marital_status a. Does STUDENT possess a multi-valued dependency? Why or why...
-
Describe the SQL clauses used in the definition of: a. A primary key constraint b. An alternate key constraint c. A foreign key constraint d. A check constraint
-
What would cause a relational schema for a database to contain more relation schemas than there are entity types?
-
Felicia cannot believe it. She has just heard from the IRS that she will be audited for the past two years. She has no idea why. Felicia does not know where to begin to prepare.
-
Explain how you determine your adjusted gross income and taxable income.
-
Describe how taxes have an impact on financial planning.
Study smarter with the SolutionInn App