15-20 using the erd pictures t the lost update problem? CA points are and how ar

Question

15-20 using the erd pictures t the lost update problem? CA points are and how are they awed co prevent What is deadlock and how ean G4 points) works. (5 points) own words, describe how backward own words, describe how recovery works. C3 points) er arrangement. of client/server database to the t a database within a Web site. (A points) terfaces between the various Web site the two-tier a needed to Describe the various software components Why is it to have standardized software CA ronment? points) base in the e-commerce envi what is XML and why is it useful regarding datal What does the following SQL Statement do: (4 points) from Customer T WHERE State produced by the following sQL queryn (s points) what SELECT Item No, description FROM Item WHERE Weight 100 AND Weight

Explanation / Answer

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1. select size from ENCLOSURE where EndNum=3582;

2. select b.AnimalName, b.AnimalNum from ENCLOSURE a inner join ANIMAL b on a.EndNum = b.EndNum where b.Species='tiger' and b.Gender='female' and a.EndNum = 4627;

3. select avg(weight) from Animal where Species='tiger' and Gender='male';

4. select count(b.AnimalName) from Enclosure a inner join Animal b on a.EndNum = b.EndNum where b.Species='monkey' and a.Type='cages' and a.size < 400 group by b.AnimalName;

5. select b.Species, avg(select Weight from Animal where Weight >=200) from Enclosure a inner join Animal b on a.EndNum = b.EndNum where and a.Type='cages' and a.size < 400 group by b.Species;

6. select AnimalName, AnimalNum from Animal b where weight = (select max(weight) from Animal);

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