EBK CONCEPTS OF DATABASE MANAGEMENT
8th Edition
ISBN: 8220100706004
Author: Last
Publisher: Cengage Learning US
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Chapter 4, Problem 4RQ
To determine
To define an index, its advantages and disadvantages and to explain the process of the creation of indexes using SQL.
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Chapter 4 Solutions
EBK CONCEPTS OF DATABASE MANAGEMENT
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- How do you create an index? How do you create a unique index? What is the difference between an index and a unique index?arrow_forwardHow is the processing of SQL DDL statements (such as CREATE TABLE) different from the processing required by DML statements?arrow_forwardOne way to secure a database is to allow only administrators to have access to create and delete tables. (513)arrow_forward
- What index should you create? Write the required SQL commands.arrow_forwardAccess path A database table is composed of records and fields hold data. Data is stored in records. A field is a part of a record and contains a single piece of data for the subject of the record. The access path for finding the list of books is AUTHOR: AuthorID, Lname BOOKAUTHOR: AuthorID, ISBN BOOKS: Pubdate, ISBNarrow_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
- An in-memory database (IMDB) is a database management system that stores the entire database in _______. a. random access memory b. read-only memory c. distributed servers d. virtual memoryarrow_forwardSQL includes many numerical functions. Two of these functions are FLOOR and CEIL. Use the Internet to research these functions. Are the functions available in Oracle, SQLServer, and Access? Write a paragraph that discusses what the functions do and anydifferences and/or similarities between the functions in Oracle, SQL Server, and Access.Then perform the following tasks: a. Solmaris Condominium Group would like to know the impact of discounting its condofees by 3 percent. Write an SQL statement in Oracle that displays the condo ID, unitnumber, discounted condo fee, discounted condo fee with the CEIL function, anddiscounted condo fee with the FLOOR function. b. Based on your research, will the values in the three columns vary? If so, how? Usethe condo with the ID of 1 to explain your answer. Be sure to cite your references.arrow_forwardWhat guidelines should you follow when naming tables and columns in Oracle 12c?arrow_forward
- For each table, identify the primary key and the foreign key(s). If a table does not have a foreign key, write None. FIGURE P3.17 THE CH03_TRANSCO DATABASE TABLESarrow_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_forward
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