Computers and Technology, 12.04.2021 23:30 tiwaribianca475

5.11 - Suppose each of the following Update operations is applied directly to the database of Figure 5.6. Discuss all integrity constraints violated by each operation, if any, and the different ways of enforcing these constraints: Figure 5.6 One possible database state for the COMPANY relational database schema. (a) Insert < 'Robert', 'F', 'Scott', '943775543', '21-JUN-42', '2365 Newcastle Rd, Bellaire, TX', M, 58000, '888665555', 1 > into EMPLOYEE. (b) Insert < 'ProductA', 4, 'Bellaire', 2 > into PROJECT. (c) Insert < 'Production', 4, '943775543', '01-OCT-88' > into DEPARTMENT. (d) Insert < '677678989', null, '40.0' > into WORKS_ON. (e) Insert < '453453453', 'John', M, '12-DEC-60', 'SPOUSE' > into DEPENDENT. (f) Delete the WORKS_ON tuples with ESSN

Answers: 3

Show answers

Another question on Computers and Technology

Computers and Technology, 22.06.2019 00:20

What’s resistance in an electrical circuit ?

Answers: 1

Answer

Computers and Technology, 22.06.2019 17:30

Type the correct answer in the box. spell all words correctly. under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

Answers: 3

Answer

Computers and Technology, 22.06.2019 22:50

Assume the existence of a bankaccount class. define a derived class, savingsaccount that contains two instance variables: the first a double, named interestrate, and the second an integer named interesttype. the value of the interesttype variable can be 1 for simple interest and 2 for compound interest. there is also a constructor that accepts two parameters: a double that is used to initialize the interestrate variable, and a string that you may assume will contain either "simple", or "compound", and which should be used to initialize the interesttype variable appropriately. there should also be a pair of functions getinterestrate and getinteresttype that return the values of the corresponding data members (as double and int respectively).

Answers: 2

Answer

Computers and Technology, 23.06.2019 13:00

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.

Answers: 3

Answer

You know the right answer?

5.11 - Suppose each of the following Update operations is applied directly to the database of Figure...

Questions