Concept explainers
a)
Creation of an
- To create an information system an initial study and following phases are need to be made by the designer because they will create an impact to the design of the
database . - The information is collected in order to establish details about the entities, relationships among the entities generated.
- Business rules that are shaped up through relationships, connectivity and cardinalities are being obtained and collected through designer.
Question that can be asked in order to create an information system:
The below are some of the sample questions that can impact the design of the database:
- Is it required to develop the database for all departments at once or whether it is required to design and implement the database for one particular department?
- What will the design approach required that could affect the process of designing?
- What type of development is required, one module at a time or integrated system approaches (Example: Billing, production, shipping and inventory)?
- What type of tracking system is required that is in terms of tracking the nuts and bolts through lot number, by shift, by production, by type or by department?
- What type of tracking system is required for the suppliers of each batch that is in terms raw materials used in the production of the nuts and bolts?
- Is it required to track the customer information regarding the receive summary of nuts and bolts based on batches?
- What type of reporting system is required that is what type of reporting requirements are required and who requires the distribution report details needs to be specified?
Effect of the questions that are asked:
The answers to the above question affect the database design in conceptual and in logical way along with the implementation, testing made with the subsequent operations.
b)
Creation of an information system:
- To create an information system an initial study and following phases are need to be made by the designer because they will create an impact to the design of the database.
- The information is collected in order to establish details about the entities, relationships among the entities generated.
- Business rules that are shaped up through relationships, connectivity and cardinalities are being obtained and collected through designer.
Question that can be asked in order to create an information system:
The below are some of the sample questions that can impact the design of the database:
- Is it required to develop the database for all departments at once or whether it is required to design and implement the database for one particular department?
- What will the design approach required that could affect the process of designing?
- What type of development is required, one module at a time or integrated system approaches (Example: Billing, production, shipping and inventory)?
- What type of tracking system is required that is in terms of tracking the nuts and bolts through lot number, by shift, by production, by type or by department?
- What type of tracking system is required for the suppliers of each batch that is in terms raw materials used in the production of the nuts and bolts?
- Is it required to track the customer information regarding the receive summary of nuts and bolts based on batches?
- What type of reporting system is required that is what type of reporting requirements are required and who requires the distribution report details needs to be specified?
Effect of the questions that are asked:
The answers to the above question affect the database design in conceptual and in logical way along with the implementation, testing made with the subsequent operations.
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Chapter 9 Solutions
Database Systems: Design, Implementation, & Management
- Using a graphics program, develop an entity-relationship diagram for a database application for an Internet bookstore where students buy textbooks from a salesperson and receive invoices for their purchases. Use Figure 5.5 as a guide.arrow_forwardA new sales ordering system needs a relational database that contains a customer table, a product inventory table, and an order table. Use a word-processing, graphics, or spread-sheet program to draw an entity-relationship diagram showing the relationships among these entities. Next, design each of these tables showing the keys and attributes to be included in each table. Include five sample records for each table.arrow_forwardSuppose you are given a data set that classifies each sample unit into one of four categories: A, B, C, or D. You plan to create a computer database consisting of these data, and you decide to code the data as A = 1, B = 2, C = 3, and D = 4. Are the data consisting of the classifications A, B, C, and D qualitative or quantitative? After the data are input as 1, 2, 3, or 4, are they qualitative or quantitative?arrow_forward
- Specification Suppose you are asked to design a club database system based on the _following information. Each student has a unique student id, a name, and an email; each club has a unique club id, a name, a contact telephone number, and has exactly one student as its president. Each student can serve as a president in at most one of the clubs, although he/she can be the members several clubs. Clubs organize activities and students can participate in any of them. Each activity is described by a unique activity id, a place, a date, a time and those clubs that organize it. If an activity is organized by more than one club, different clubs might contribute different activity fees. Question Draw an E-R diagram for the system according to the above description.arrow_forwardA member of The perspective of the head is thus: It's a database, and the fundamental design/structure we picked contains some sensitive driver information." How about putting it in a secure location where only those who need it may access it? Is there a tactic you'd prefer, or a position you'd take? Justification is required....arrow_forwardDraw an E-R diagram for the description below. Suppose that you are asked to model a database including all pharmaceutical companies, their drugs, and all pharmacies. Each pharmaceutical company is identified by its name and has a phone number. For each drug, the trade name (e.g., Acetaminophen) and formula must be recorded. Each drug is sold by only one pharmaceutical company, and the trade name identifies a drug uniquely from among the products of that company. If a pharmaceutical company stops production, we do not need to keep track of its products any longer. Each pharmacy has an identifier name, address, and phone number. Each pharmacy sells several drugs. A drug could be sold at several pharmacies, and the price could vary from one pharmacy to another.arrow_forward
- I understand the purpose of a database, which is to make data record-keeping easier for any company. And I'm aware of the hardware requirements. The concept of programming the rules and structure of a database is the area in which I am most confused. A database, in my mind, is a chart (or many charts) containing fields that are used to hold records. Then, of course, those records in one chart interweave with those in other charts, necessitating the creation of chart linkages. The concept of developing a framework for the data to fit into is where I get stuck. Are we creating metaphysical venues to store data, or are we just recording relationships between data saved on a variety of platforms?arrow_forwardQuestion : Draw the EER diagram that describes the following scenario: ( PLEASE EXPLAIN STEP BY STEP AND IN DETAIL) We want to design a database for keeping track of information about votes taken is the PAKISTAN PROVISIONS in the current administration. They include the PARLIAMENT and the SENATE. A MINISTER in the PAKISTAN is either a Parliament Member or a Senator depending on to which body they are elected to. The database needs to keep track of each PAKISTAN CITY’s Name (e.g., ‘Lahore’, ‘Karachi’, ‘Multan’) and include the Region of the country to which the city belongs (whose domain is {‘Punjab’, ‘Sind’, ‘KPK’, ‘Baluchistan’}) and its population in the 170 million. Each MINISTER is described by his or her Name, plus the District represented, the Start_date when the parliament was first elected, and the political Party to which he or she belongs (whose domain is {‘PPP’, ‘PTI’, ‘PML(N)’, ‘PML(Q)’, ‘ANP’, ‘MQM’, ‘Independent’, ‘Other’}). A city can have a number of parliament…arrow_forwardIn the case of a physical database, where do you begin?arrow_forward
- Construct the ER diagram for the NHL database using the Crows Foot notation Suppose you are given the following requirements for a simple database for the National Hockey League (NHL):• the NHL has many teams,• each team has a name, a city, a coach, a captain, and a set of players,• each player belongs to only one team,• each player has a name, a position (such as left wing or goalie), a skill level, and a setof injury records,• a team captain is also a player,• a game is played between two teams (referred to as host_team and guest_team) andhas a date (such as May 11th, 2017) and a score (such as 4 to 2).arrow_forwardIt's important to note that doing a search using keywords on the internet and conducting a search using keywords on a database are two entirely different processes. Both of these things are quite different from one another. What are some of the most significant differences that exist between the two in terms of how the inquiries are expressed and what the results of a query are, and what are some of the most significant similarities that exist between the two in terms of how the inquiries are expressed and what the results of a query are?arrow_forwardYour Division Head's point of view is as follows: "Pictures are stored in a database, and the basic design/structure we chose includes some very sensitive driver information." What if we placed it in its own folder, out of reach of people who shouldn't have access to it? What would your stance be, or, more precisely, which strategy would you prefer? It is necessary to present justification.arrow_forward
- Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781305971776Author:Ralph Stair, George ReynoldsPublisher:Cengage LearningPrinciples of Information Systems (MindTap Course...Computer ScienceISBN:9781285867168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning