Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 3, Problem 8RQ
Program Plan Intro
- PRODUCT operator: It is used to find the Cartesian product of two attributes present in the
database .
- JOIN operator: The join operator combines tuples from different relations if the join condition is satisfied.
- SELECT and PROJECT operator: The select operator selects tuples that satisfy the given predicate from a relation and project operator projects columns that satisfy a given predicate.
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Chapter 3 Solutions
Database Systems: Design, Implementation, & Management
Ch. 3 - What is the difference between a database and a...Ch. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - What are the requirements that two relations must...Ch. 3 - Which relational algebra operators can be applied...Ch. 3 - Explain why the data dictionary is sometimes...Ch. 3 - A database user manually notes that The file...Ch. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Use Figure Q3.13 to answer Questions 1317. FIGURE...Ch. 3 - Create the table that results from applying a...Ch. 3 - Write the relational algebra formula to apply an...Ch. 3 - Create the table that results from applying an...Ch. 3 - Using the tables in Figure Q3.13, create the table...Ch. 3 - Prob. 18RQCh. 3 - Prob. 19RQCh. 3 - Prob. 20RQCh. 3 - Identify and describe the components of the table...Ch. 3 - Identify the primary keys. FIGURE Q3.22 THE...Ch. 3 - Identify the foreign keys. FIGURE Q3.22 THE...Ch. 3 - Create the ERM. FIGURE Q3.22 THE CH03_THEATER...Ch. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 26RQCh. 3 - What would be the conceptual view of the INDEX...Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Describe the type(s) of relationship(s) between...Ch. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 13PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - For each table, identify the primary key and the...Ch. 3 - Prob. 18PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Identify the TRUCK tables candidate key(s). FIGURE...Ch. 3 - For each table, identify a superkey and a...Ch. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Create the ERD. (Hint: Look at the table contents....Ch. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying a...
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- a. What is the result of this query:SELECT AVG (S.rating)FROM Sailors S b. What is the result of this query:SELECT COUNT (S.rating)FROM Sailors S c. Show the full outer join of S with itself, with the join condition being sid=sid .arrow_forwardWhy are the NATURAL JOIN keywords not an option for producing a self-join?arrow_forwardRewrite the queryselect *from section natural join classroomwithout using a natural join but instead using an inner join with a using condition.arrow_forward
- What’s the difference between an equality and a non-equality join?arrow_forwardreate a query that SELECT all of the EMPLOYEES from the EMPLOYEE TABLE that are Mangers.  Include Employee ID first name, Lastname and Salary (Hint: Self Join)    /*   Write a query the gives the Employee ID first name, Lastname and Salary and Project Number of EMPLOYEES who aren't currently assigned to a project (hint outer join) Create a query that lists the lastnme, edlevel , job, the number of years they've worked as of Jan 01/2002 ( hint : year function Jan 01/2002 minus hiredate), and their salary.  Get the employees that have the same Job  as the employee named starts with J  (hint subquery from employee) and hiredate < Jan 01/2002  Sort the listing by highest salary first.   */arrow_forwardWrite a query that uses NATURAL JOIN TO connect the EMPLOYEE and EMPPROJACT table.  Include the Employee number , First and Last name, Salary, Salary increased by 3% and Project numberarrow_forward
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