Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 11, Problem 13RQ
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Factor that are to be considered to write the conditional expression:
- It is recommended to use simple column or literal as operands in a conditional expression.
- Numeric comparisons are made faster when compared with the characters, date and null characters.
- Equality expression will be processed in a faster rate when compared with inequality expressions...
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In SQL Server, character data types may be distinguished as follows: NVARCHAR, NVARCHAR, and NVARCHAR.
The character data types NVARCHAR, NVARCHAR, and NVARCHAR are supported by SQL Server.
SQL is a declarative language means that
(a) it allows describing the algorithm to carry out the desired query
(b) variables are declared
(c) it allows describing the desired query but not the algorithm to carry out it
(d) none of the answers are correct
Chapter 11 Solutions
Database Systems: Design, Implementation, & Management
Ch. 11 - Prob. 1RQCh. 11 - What index should you create? Write the required...Ch. 11 - What is the focus of most performance-tuning...Ch. 11 - What are database statistics, and why are they...Ch. 11 - How are database statistics obtained?Ch. 11 - What database statistics measurements are typical...Ch. 11 - How is the processing of SQL DDL statements (such...Ch. 11 - In simple terms, the DBMS processes a query in...Ch. 11 - If indexes are so important, why not index every...Ch. 11 - What is the difference between a rule-based...
Ch. 11 - Prob. 11RQCh. 11 - What are some general guidelines for creating and...Ch. 11 - Prob. 13RQCh. 11 - Prob. 14RQCh. 11 - Prob. 15RQCh. 11 - SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE, EMP_SEX...Ch. 11 - Problem 1 and 2 are based on the following query:...Ch. 11 - Using Table 11.4 as an example, create two...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Prob. 6PCh. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Problems 1721 are based on the following query:...Ch. 11 - SELECT P_CODE, P_DESCRIPT, P_PRICE, P.V_CODE,...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Prob. 27PCh. 11 - Problems 27 and 28 are based on the following...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...
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- SQL Server's character data types come in three varieties: NVARCHAR, NVARCHAR, and NVARCHAR.arrow_forwardsql statementarrow_forwardA (n) ______ is procedural SQL code that is automatically invoked by the RDBMS upon the occurrence of a given data manipulation event. trigger package function anonymous blockarrow_forward
- PATHS is a table that contains information about paths on a number line. The structure of PATHS is as follows, where x1 and x2 represent that there is a path from Coordinate x1 to Coordinate x2 (You can't move from Coordinate x2 to Coordinate x1 ). NAME ΤΥΡE NULLABLE X1 INT FALSE X2 INT FALSE Problem Please write an SQL statement that returns the beginning and end point of each path in PATHS . Sort them by the value of the beginning point in ascending order. Constraints • In the case where a direct path from Coordinate a to Coordinate b is available, no path from Coordinate b to Coordinate a will be given. |x1-x2| = 1 • No path will overlap with one another. Example Suppose that PATHS is as follows: x1 x2 1 2 2 3 4 7 7 6 This table can be visualized as follows: START END END START 7 8. 9 Therefore, your SQL statement must return the following: start end 1 4 8 6arrow_forwardsql queries Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a query in SQL to display the Entire data of All those employees whoseDEPARTMENT_ID is greater than the DEPARTMENT_ID of all those employees who earn morethan 50,000 per month Write a query in SQL to display the minimum, maximum salary and DEPARTMENT_NAMEof all those departments whose minimum salary is greater than 4000 in ascending order.arrow_forwardSQL QUERIES Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a Query in SQL to delete the record of all those cities where city name ends with b fromlocations table.arrow_forward
- SQL QUERIES Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a query in SQL to display the DEPARTMENT_NAME of all those Departments whoseDEPARTMENT_ID is greater than the DEPARTMENT_ID of Physics department. Write a Query in SQL to show the FIRST_NAME of all those employees whose salary is lessthan the salary of all those employees whose MANAGER_ID is 101 or 102.arrow_forwardComputer Science I need help with writing the query in a SQL server Management (database) the question is what are the procedure and triggers in these descriptions? or which procedure and trigger are used for this description If the Students have English as a second language, they need to be placed in classes only reserved for them. If English is a first language, then they need to be placed into specific classes reserved for them.arrow_forwardDatabase design Objectives: To understand and be able to write simple SQL queries Instruction: Refer to HR schema to answer the questions Include screenshot of your code and output of each question 1. Write SQL query that displays the last name and salary of employees earning more than $12,000. 2. Write SQL query that displays the last name and department number for employee number 176. 3. Write SQL query to display the last name and salary for all employees whose salary is not in the range $5,000 through $12,000. 4. Write SQL query to display the last name, job ID, and hire date for employees with the last names of Matos and Taylor. Order the query in ascending order by hire date. 5. Display the last name and department ID of all employees in departments 20 or 50 in ascending alphabetical order by name. 6. Write a query that displays the last names of all employees who have both an “a” and an “e” in their last name. 7. Write a query to display the employee…arrow_forward
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