Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 20MC
Which of the following is used to join data contained in two or more tables?
- a. primary key
- b. unique identifier
- c. common field
- d. foreign key
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
11. Which of the following statements is true with regard to BCNF tables, i.e. Boyce-Codd
Normal Form?
a. A BCNF table is in INF.
b. A BCNF table has more than one candidate keys.
c. BCNF tables still have data redundancies.
d. All of the above are true.
In the table's design view, a date to be displayed in the form of Sunday, 8 May 2022 is
formatted by:
12.
a. ddd, dd mmmm yyyy
b. dd/mmm/yyyy
c. dddd, d mmmm yyyy
d. dddd dd mmmm yyyy
Key to represent relationship between tables is called
A. Primary key
B. Secondary Key
C. Foreign Key
D. None of these
Which of the following is true of foreign keys?
A foreign key should always be linked to a primary key of another table.
A foreign key could be linked to a candidate key of a table.
A foreign key is not needed if the data type is different.
A foreign key can be linked to any foreign key.
Chapter 1 Solutions
Oracle 12c: SQL
Ch. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Discuss the problems that can be caused by data...Ch. 1 - Explain the role of a primary key.Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - What type of relationship can’t be stored in a...Ch. 1 - Identify at least three reasons an organization...
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Prob. 5MCCh. 1 - Prob. 6MCCh. 1 - Prob. 7MCCh. 1 - Which of the following has no partial or...Ch. 1 - Prob. 9MCCh. 1 - Which of the following has no partial dependencies...Ch. 1 - Which of the following has no repeating groups but...Ch. 1 - Prob. 12MCCh. 1 - Prob. 13MCCh. 1 - A unique identifier for a data row that consists...Ch. 1 - Which of the following symbols represents an...Ch. 1 - Prob. 16MCCh. 1 - Which of the following represents a field in a...Ch. 1 - Which of the following defines a relationship in...Ch. 1 - When part of the data in a table depends on a...Ch. 1 - Which of the following is used to join data...Ch. 1 - Which tables and fields would you access to...Ch. 1 - Prob. 2HOACh. 1 - Prob. 3HOACh. 1 - Prob. 4HOACh. 1 - Access path A database table is composed of...Ch. 1 - Prob. 6HOACh. 1 - Prob. 7HOACh. 1 - Prob. 8HOACh. 1 - Prob. 9HOACh. 1 - Prob. 10HOA
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
- Write the SQL code that will restore the data to its original status: that is, the table should contain the data that existed before you made the changes in Problems 5 and 6.arrow_forwardHow do you create an index? How do you create a unique index? What is the difference between an index and a unique index?arrow_forwardAn EMPLOYEES table was added to the JustLee Books database to track employee information. Display a list of each employee’s name, job title, and manager’s name. Use column aliases to clearly identify employee and manager name values. Include all employees in the list and sort by manager name.arrow_forward
- Write the two SQL command sequences required to: a.Create a temporary table named TEMP_1 whose structure is composed of the EMP_2 attributes EMP_NUM and EMP_PCT. b.Copy the matching EMP_2 values into the TEMP_1 table.arrow_forwardDetermine the functional dependencies that exist in the following table, and then convert this table to an equivalent collection of tables that are in third normal form. LOCATION (LOCATION_NUM, LOCATION_NAME, (UNIT_NUM, SQR_FT, BDRMS, BATHS, CONDO_FEE))arrow_forwardWhat does it mean for two tables to be union compatible?arrow_forward
- Problems 27 and 28 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_QOH, P_PRICE, V_CODE FROM PRODUCT WHERE P_QOH P_MIN AND P_MIN = P_REORDER AND P_REORDER = 50 ORDER BY P_QOH; What indexes would you recommend? Write the commands to create those indexes.arrow_forwardProblem 1 and 2 are based on the following query: SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE, EMP_SEX FROM EMPLOYEE WHERE EMP_SEX = 'F' AND EMP_AREACODE = '615' ORDER BY EMP_LNAME, EMP_FNAME; What indexes should you create? Write the required SQL commands.arrow_forward4. Write a SELECT statement that selects all of the columns for the catalog view that returns information about foreign keys. How many foreign keys are defined in the AP database?arrow_forward
- a column is acting as a unique reference key for a table which kind of key is this? a) compound b) primary c) composite d) foreignarrow_forwardThe Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENACNE_TYPE_ID should be foreign keys to their original tables. Cascade update and cascade delete the foreign keys.arrow_forwardSubject: DatabaseANSWER THE FOLLOWING QUESTIONS BASED ON THE GIVEN TABLE a) write the DDL statement to create the table CUSTOMER_DETAIL with the primary key constraint. (use most appropriate data type for each attribute). b) Add NOT NULL constraint to attribute of CustomerName c) Add a column named "Country" in the CUSTOMER_DETAIL table d) Rename the table to CUSTOMERarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781305627482Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781285196145Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos CoronelPublisher:Cengage Learning
A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Cengage Learning
A Guide to SQL
Computer Science
ISBN:9781111527273
Author:Philip J. Pratt
Publisher:Course Technology Ptr
SQL Basics for Beginners | Learn SQL | SQL Tutorial for Beginners | Edureka; Author: edureka;https://www.youtube.com/watch?v=zbMHLJ0dY4w;License: Standard YouTube License, CC-BY