Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
thumb_up100%
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.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Using the STUDENT and PROFESSOR tables, illustrate the difference between a natural join, and equijon, and an outer join.
Explain inner join , outer join and self join in detail.
Why are the NATURAL JOIN keywords not an option for producing a self-join?
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...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Delete the OWNER_INDEX 3 index from the OWNER table.arrow_forwardRewrite the queryselect *from section natural join classroomwithout using a natural join but instead using an inner join with a using condition.arrow_forwardWhat’s the difference between an equality and a non-equality join?arrow_forward
- reate 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_forwardillustrate using students and professor tables what outer join isarrow_forwardit is possible to use a NATURAL join, there are some downsides to using this type of join. What are some of the downsides? Provide an example of a 3 table OUTER join (use JOIN ON in your SELECT statement syntax). Explain how it works and what the order of of the joins is.arrow_forward
- Report the eid of every employee who manages at least two different people. Use the usual technique of table renaming and self-join, except use the keywords CROSS JOIN to take the Cartesian product of the two tables: sales(eid, day, amount)employee(eid, name, salary, dept)manages(manager, junior)department(did, name, division)employee[dept] ⊆ department[did]manages[manager] ⊆ employee[eid]manages[junior] ⊆ employee[eid]sales[eid] ⊆ employee[eid] USE CROSS JOIN PLEASE! Only Cross Join is allowed. Do not use other SQL techniques please.arrow_forwardWhat situations would call for the usage of the query select * from student natural full outer join takes natural ful?arrow_forwardWhen does the query select * from student natural full outer join takes natural full outer join course include tuples with null values for the title attribute?arrow_forward
- JOIN TABLES One row in the PAT_ENC table represents one patient encounter. One row in the ORDER MED table represents one medication order. One patient encounter can have many medication orders but one medication order can only have one patient encounter. In other words, the cardinality of this PAT_ENC to ORDER_MED relationship is one-to- many. You start a query with PAT_ENC. You then add ORDER_MED using an inner join. What is true about the granularity of the result set before and after adding the ORDER_MED table? SELECT ONE OF THE FOLLOWING A. The granularity stays at one row per patient encounter. B. The granularity stays at one row per medication order. C. The granularity changes from one row per patient encounter to one row per medication order on an encounter. D. The granularity changes from one row per medication order to one row per patient encounter.arrow_forwardWrite a SQL query using their schema to find out who hasn't taken a course at the university. There should be no subqueries or set actions (use an outer join).arrow_forwardWhy does the order of the operands (tables) matter in an EXCEPT (MINUS) query but not in a UNION query?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr
A Guide to SQL
Computer Science
ISBN:9781111527273
Author:Philip J. Pratt
Publisher:Course Technology Ptr