Problem with lists – Modification problems when deleting/adding due to multiple themes in one list. * Null Values – inserted rows with missing values * Mod problems occur due to having two or more data sets * Causes redundancy. Relational DataBase tables – relational model emerged due to list problems. It is a collection of separate tables. Table holds data for only one theme, not multiple. When evaluating a database design, consider mod actions: insert/delete/update. Structured Query
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DATABASE MANAGEMENT CONCEPTS 1. The DBA asks for your help in planning the data archive for the following Premiere Products database: Rep (RepNum, LastName, FirstName, Street, City, State, Zip, Commission, Rate) Customer (CustomerNum, CustomerName, Street, City, State, Zip, Balance, CreditLimit, RepNum) Orders (OrderNum, OrderDate, CustomerNum) OrderLine (OrderNum, PartNum, NumOrdered, QuotedPrice) Part (PartNum, Description, OnHand, Class, Warehouse, Price) Determine
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Tasks | Team Member Responsibilities | Assessment | Grading Rubrics Objective The project for CIS336 is designed to touch all aspects of the fundamental concepts of database design and logical data modeling covered during the class. The project is team centered and each team will be responsible for designing, developing, and demonstrating the functionality of a database created based on a defined set of business specifications. At the end of the session
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DATA MODELING Although the field of information systems engineering is young relative to most other engineering disciplines, it does apply formal modeling methods to study and predict aspects of a planned system. Different kinds of models may exhibit the user interfaces, behaviours, or data interchanges of the planned system. Modern businesses depend heavily on timely, trustworthy, and relevant data to provide a competitive advantage (Lau, 2010). As a result, organizations invest in modeling their
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out of what is in demand. The data table provides us with information on inventory items, store departments, general ledger coding, and the dollar amount of inventory that is in stock. Entity Relationship An entity-relationship diagram is a data modeling technique that illustrates business entities and the relationships between them. Each shape within the diagram has its own special meaning. A rectangle represents an entity. Diamond represents relations between the entities. Oval represents unique
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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A good definition for a database is: 1) _______ A) A text file with values delimited by commas B) A collection of related data C) A card catalogue D) A piece of software for managing databases 2) Redundancy refers to what database condition? 2) _______ A) All data
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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A good definition for a database is: 1) _______ A) A text file with values delimited by commas B) A collection of related data C) A card catalogue D) A piece of software for managing databases 2) Redundancy refers to what database condition? 2) _______ A) All data
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Part I 1. Given the file structure shown in Figure P1.1, answer Problems a through f. Figure P1.1 The File Structure for Problems a-f a) How many records does the file contain, and how many fields are there per record? b) What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure? c) If you wanted to produce a listing of the file contents by last name, area code, city, state, or zip
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CIS 515 Week 5 Assignment https://hwguiders.com/downloads/cis-515-week-5-assignment/ Tours Company System – Database Implementation Your Name Your College Your University Date A1 – a) Below is the data model for 2nd Normal form for travel company. Their table name and column names are mentioned in the table. SalesPersonDetails EmployeeId FirstName LastName ToursSold Integer Text Text Integer CustomersData
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into a data summary * Information – the result of processing raw data to reveal its meaning * Data processing can be as simple as organizing data to reveal patters or as complex as making forecasts or drawing inferences using statistical modeling * To reveal meaning, information requires context * Raw data must be properly formatted for storage, processing, and processing * Ex: dates must be stored in Julian calendar formats and yes/no responses must be converted to Y/N
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