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On the Job: A look at life on the job and the industry culture. University students are good to study huge books. But have you ever wanted to try to use the knowledge you have been studying by solving real-life business problems? That is exactly the purpose of a Business Game. The principle is simple: teams with strong determination trying to find the best solution to cases presented by partner companies.
A Business Game is a student-led initiative which challenges students. Write a C program with embedded SQL commands to address your example in the previous answer. Write a C program with embedded SQL commands to find the standard deviation of sailors' ages. Extend the previous program to find all sailors whose age is within one standard deviation of the average age of all sailors.
Explain how you would write a C program to compute the transitive closure of a graph, represented as an 8QL relation Edges jrom, to , using embedded SQL commands. You need not write the program, just explain the main points to be dealt with.
Explain the following terms with respect to cursors: 'updatability, sensitivity, and scrollability. Define a cursor on the Sailors relation that is updatable, scrollable, and returns answers sorted by age. Which fields of Sailors can such a cursor not update? Give an example of a situation that calls for dynamic 8QL; that is, even embedded SQL is not sufficient. Compare this assertion with the equivalent table constraint. Explain which is better. Write SQL statements to delete all information about employees whose salaries exceed that of the manager of one or more departments that they work in.
Be sure to ensure that all the relevant integrity constraints are satisfied after your updates. Write the SQL statements required to create these relations, including appropriate versions of all primary and foreign key integrity constraints. Express each of the following integrity constraints in SQL unless it is implied by the primary and foreign key constraint; if so, explain how it is implied.
If the constraint cannot be expressed in SQL, say so. For each constraint, state what operations inserts, deletes, and updates on specific relations must be monitored to enforce the constraint. Every class has a minimum enrollment of 5 students and a maximum enrollment of 30 students. At least one dass meets in each room. Every faculty member must teach at least two courses. Every student must be enrolled in the course called Mathl0l. The room in which the earliest scheduled class i.
Two classes cannot meet in the same room at the same time. The department with the most faculty members must have fewer than twice the number of faculty members in the department with the fewest faculty members. No department can have more than 10 faculty members. A student cannot add more than two courses at a time i. The number of CS majors must be more than the number of Math majors. He has advised high-tech AI-based start-ups. He has also published research in international journals and conferences.
Ivan Idris has an MSc in experimental physics. His graduation thesis had a strong emphasis on applied computer science. After graduating, he worked for several companies as a Java developer, data warehouse developer, and QA analyst.
His main professional interests are business intelligence, big data, and cloud computing. Ivan Idris enjoys writing clean, testable code and interesting technical articles. Ivan Idris is the author of NumPy 1. You can find more information and a blog with a few NumPy examples at ivanidris. Click here if you have any feedback or suggestions.
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