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Express the subsequent query in SQL assumes which the data is stored within EMPLOYEE table with relevant fields
(i) Display name, job, salary, and hire date of employee who are hired between May 10, 1975 and December 20, 1980. Order the query within ascending order of hire date. (ii) Display name and hire date of employee who are employed after employee ‘RAGHAV'.
(i) Select name, job, salary, hire date from employee where hire date between ‘May-10-1975' and ‘Dec-20-1980' order by hire date; (ii) Select name, hire date from employee Where hire date> (select hire date from employee where name= ‘Raghav');
The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
From SAD to OOAD (Structured Analysis and Design (SAD) to Object Oriented Analysis and Design (OOAD). We will find here how we can map various models in SAD to different model
Explain the two constraints, check and foreign key in SQL along with an example for each. Give the syntax. CHECK constraint - CHECK constraint specifies an expression which
Determine the rule that a value of a foreign key should appear as a value of some particular table is called a Ans: Referential constraint. The rule that a value of a fo
describe all the tables you have created. ?get table_name, status, num_rows, user_stats in user_tables system view ?get table_name, constraint_name, constraint_type in user_constr
Why containment is important in oosystems? Containment is an significant concept in oosystems because it allows dissimilar users to view data at different granularities.
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
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Why is database redesign necessary? Database redesign is essential for two reasons. First, redesign is essential both to fix mistakes made during the initial database design. S
Example : Create a sequence named SEQSS that starts at 105, has a step of 1 and can take maximum value as 2000. CREATE SEQUENCE SEQSS START WITH 105 INCREMENT BY 1 MAX VA
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