Essentials of MIS (13th Edition)
13th Edition
ISBN: 9780134802756
Author: Kenneth C. Laudon, Jane Laudon
Publisher: PEARSON
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Expert Solution & Answer
Chapter 6, Problem 1RQ
Explanation of Solution
Database is the organized collection of associated data elements which is used to have the record of things or items of interest.
- It is often defined as the structure to hold the data...
Explanation of Solution
Entity:
The basic block for building the data collected about person, place, event, or thing is called as entity.
- Entities denote attributes that can have many instances.
- Entity is about the gathering of the information about the place, person, or thing. For example: a patient, a musician, and so on.
- To locate the information in the entity, they have a name, short description about what they are and identifier.
- Identifiers are used to find each and every specific instance of an entity.
- So, it is the purpose of having identifiers with unique values.
Example:
The example of an entity is given below:
- STUDENT – the student is the person name that collects the details of student information. So the STUDENT acts as the entity.
- EMPLOYEE - the employee is the person name that collects the details of employee information. So the EMPLOYEE acts as the entity...
Explanation of Solution
Relational database:
- Relational database is a set of multiple data organized by tables, records, and columns and it creates the relationship between the database tables.
- The individual value in table provides the link from one table to another.
Storage of data in relational database:
- Relational database is a database which organizes data according to the relational model as table and table consists of rows and columns.
- A data in a row or a column of a table is called fields.
- Fields in a database table are also referred as attributes of a database object...
Explanation of Solution
Role of Entity-relationship diagram in database:
An entity-relationship diagram represents the important elements of database in a graphical form.
- Entity-relationship (ER) diagram is the technique used to design the relational database.
- ER diagram is useful to create the data model, which serves business process. Additionally, the diagram ensures whether data is accurate, well-formed and easy for retrieval.
- An Entity-relationship diagram is represented in the graphical form that shows only important elements such as:
- Record types
- Attributes
- Relationship between entities
- For example, consider the following diagram:
- The rectangular box represents the entities such as Customer and Account.
- The oval symbol represents the attributes such as Firstname, Customer _id, Address, Username and Password.
- The diamond symbol represents the relationship between two entities.
- Here, it shows the one-to-one relationship between the Customer and Account.
- The relationship shows that one customer is allowed to access the one account.
- Here, it shows the one-to-one relationship between the Customer and Account.
Role of normalization in database:
Normalization is a process of dividing the tables by more than one idea into set of tables such that each and every table contains only one idea...
Expert Solution & Answer
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Chapter 6 Solutions
Essentials of MIS (13th Edition)
Ch. 6.3 - Identify the problem in this case study. To what...Ch. 6.3 - Prob. 2CQ1Ch. 6.3 - Prob. 4CQ1Ch. 6.5 - Prob. 1CQ2Ch. 6.5 - What people, organization, and technology issues...Ch. 6.5 - Prob. 3CQ2Ch. 6.5 - Prob. 4CQ2Ch. 6 - Prob. 1IQCh. 6 - Prob. 2IQCh. 6 - Prob. 3IQ
Ch. 6 - Prob. 4IQCh. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5DQCh. 6 - Prob. 6DQCh. 6 - Prob. 7DQCh. 6 - Prob. 8HMPCh. 6 - Prob. 9HMPCh. 6 - Prob. 11HMPCh. 6 - Prob. 13CSQCh. 6 - Prob. 14CSQCh. 6 - Prob. 15CSQCh. 6 - Prob. 16CSQCh. 6 - Prob. 17MLMCh. 6 - Prob. 18MLM
Knowledge Booster
Similar questions
- a) What is Big Data and what is its significance? b) Big Data's Limits and Security Concernsc) Please include at least one example of a company that incorporates Big Data technology, as well as a brief explanation of how it uses this database technology.arrow_forwarda) What is Big Data and what is its significance? b) Big Data's Limits and Security Concerns c) Please include at least one example of a company that incorporates Big Data technology, as well as a brief explanation of how it uses this database technology.arrow_forwardPoint out the wrong statement. a. Data is factual information for analysis b. BI is a category of database software that provides an interface to help users quickly and interactively scrutinize the results in a variety of dimensions of the data c. None of the mentioned d. Customer relationship management (CRM) entails all aspects of interaction that a company has with its customerarrow_forward
- What is Database Management System? Define Big Data and Metadataarrow_forward1. Define Databases, also describe the importance of database in business? 2. How file system is different from database system 3. What are the different types of databases, discuss in detail any two types? 4. What is importance of Data Model 5. Explain Business Rule in database with any examplearrow_forwardHow do databases handle complex data types like spatial data (e.g., geometries) and multimedia data (e.g., images and videos)? Discuss storage and retrieval strategies.arrow_forward
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