Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- Refer again to the UML Class Description for Student. Write the code for the class_text method using a dictionary structure to assign the appropriate text value for the class_code value.arrow_forwardA USE statement __________ None of these Identifies the database within which the query is to be executed Identifies the SET theory All of these Identifies Mr. Peabody’s rulesarrow_forwardAn online retailer stores information about the items purchased made by its customers. Each day the following information is summarized and stored in a publicly available database. • The date each item was purchased • The 5-digit product code of each item purchased • The prices in dollars at which the items were purchased • The number of purchases made of each item at each price A sample portion of the database is shown below. Date Product Code Purchase Price Number of purchases 21/05/2017 16342 23.95 7 21/05/2017 18442 23.95 7 21/05/2017 22345 5.88 22 21/05/2017 20964 32.14 10 22/05/2017 16342 24.45 22/05/2017 14224 42.99 1 Which of the following CANNOT be determined using only the information in the database? The number of purchases made by an individual customer O The average cost of an individual item purchase on the site. How many times a certain product was purchased in a given month. O The product code of the most-purchased item on the site in a given year.arrow_forward
- candidate key only branchNo and postcodearrow_forwardFinance do not use excel calculation sreen shotarrow_forwardAccess Assignment Problem: JMS TechWizards is a local company that provides technical services to several small businesses in the area. The company currently keeps its technicians and clients’ records on papers. The manager requests you to create a database to store the technician and clients’ information. The following table contains the clients’ information. Client Number Client Name Street City State Postal Code Telephone Number Billed Paid Technician Number AM53 Ashton-Mills 216 Rivard Anderson TX 78077 512-555-4070 $315.50 $255.00 22 AR76 The Artshop 722 Fisher Liberty Corner TX 78080 254-555-0200 $535.00 $565.00 23 BE29 Bert's Supply 5752 Maumee Liberty Corner TX 78080 254-555-2024 $229.50 $0.00 23 DE76 D & E Grocery 464 Linnell Anderson TX 78077 512-555-6050 $485.70…arrow_forward
- Access: Tables and Controlsarrow_forwardAlternate keys: Identify at least five keys (not already listed as PK or FK) needed by end users. These indexes would be considered Alternate or Secondary keys and are mostly used for queries and quick reporting. They may contain multiple columns.arrow_forwardin a shop ,there are 10 employee and 20 kinds of goods,goods id between 1-20 EMPLOYEE id first name last name gender 10001, 'Tom', 'Brown', 'F'10002, 'Elizabeth', 'Tremblay', 'F'10003, 'Gladys', 'Julie', 'F10004, 'John', 'Taylor', 'M10005, 'Amelia', 'Smith'10006, 'Logan', 'Katherine'10007, 'Leo', 'Brown'10007, 'Lem', 'Thompson'10009, 'Tom' 'Smith'10010, 'Emma', 'Campbell' ------------ and I want to add a name library in it ,like this how could i create a HTML file ,with will randomly create customers with these employee . there is a start button on the page . press "start "bottom ,and it will It will randomly match 10 items, customers, and goods, display goods id ,customername and gender ,employer name , id and gender . how to do such a page ?arrow_forward
- Database coursearrow_forwardLooking Up Data- INDEX () & MATCH() Which of the following statements describes how the INDEX) and MATCH() functions are combined to lookup data? A) MATCH() is used within the INDEX() function to return the relative position of the data in the lookup table B) INDEX) is used within the MATCH() function to return the relative position of the data in the lookup table C) MATCH() is used to match values from the lookup table and the source table, INDEX() returns the index of these values D) INDEX calculates the relative position of the data in the source table and returns values for MATCH() to lookuparrow_forwardHaving this information. StudentsAttribute Name Data TypeStudentID char(11)FirstName varchar(20)LastName varchar(20)Gender char(1)DateofBirth date CoursesAttribute Name Data TypeCourseCode varchar(6)CourseName varchar(70)Level char(2)Credits int RegistrationAttribute Name Data TypeStudentID char(11)CourseCode varchar(6)Grade decimal(2, 1) Write SQL code to: 1. What are the student ID, the names, and birthday of the female students who were born before the last day of 1992? 2. How many students are registered in the course “PHY210”? 3. How many courses are offered by the department of Computer Science (i.e. course codes CS***)? 4. Which course(s) (couseCode and courseName) of level G1 give 5 credits?arrow_forward
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