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Assuming that all the tables have been created as given in the relational schema, write SQL code to make the following changes in the structure of the tables:
(i) Make the employee_id the Primary Key of the EMPLOYEES table
(ii) Make the department_id and the manager_id the foreign key of the Employee table assuming that the department_id has been declared as the primary key of the DEPARTMENTS.
(iii) Add a check constraint in the Job_History table so that the end_date will always be greater than the start_date.
(iv) Add a unique constraint in the Employee table so that each employee will have a unique email address.
Documentation explaining plans for, or results of, the testing of a system or component, Types contain test case specification, test incident report, test log, test procedure, test
m2+m3+m5+m7+m12+m8+m9 simplify using k-map
Question 1: a) Describe the various activities and or processes related to the development of Information systems. b) Using a diagram, show the several development processes
What is the use of CMM? Capability Maturity Model is used in assessing how well an organisation's processes permit to complete and manage latest software projects.
What is the meaning of cardinality in data modelling? Cardinality in data modelling, cardinality specifies how the of occurrences of one object is linked to the number of occur
Determine the Higher order programming languages Higher order programming languages such as COBOL and PASCAL came into existence. Use of these made programming much easier. In
Dear Sir/ Madam I have an 8 page essay to be written how much I pay per page? Thanks
What are the characteristics of SRS? i. Correct - The SRS should be made up to date when appropriate needs are identified. ii. Unambiguous - When the needs are correctly un
Define Process Specification. Process Specification is used to explain all flow model processes that appear at the final level of refinement. Check & Convert pressure Ch
Write a report which critically analyses the system design process of a project. Projects might include designing a light rail network for a city, more environmentally-conscious bu
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