Principles of Information Systems (MindTap Course List)
13th Edition
ISBN: 9781337516945
Author: STAIR
Publisher: Cengage
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Textbook Question
Chapter 5, Problem 5SAT
The ability to combine two or more tables through common data attributes to form a new table with only the unique data attributes is called _______________.
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An_____________ is a collection of instructions and commands used to define and describe data and relationships in a specific database. a. data manipulation language. b. schema. c. data model d.data definition language.
Assignment Brief:
Some of the most difficult decisions that you face as a database developer are what tables to
create and what columns to place in each table, as well as how to relate the tables that you
create. Normalization is the process of applying a series of rules to ensure that your database
achieves optimal structure. Normal forms are a progression of these rules. Each successive
normal form achieves a better database design than the previous form did. Based on your
understanding for the various normal form respond to the following problems and provide the
optimal answer/solution.
Problem#1: 1st Normal Form (1NF)
Consider the Students table, with the primary key underlined, and the following data:
Students:
Alpha
100111
Email
doe@usna.edu
Name
Courses
GradePoints
NN204, SI204,
IT221
SM223, EE301
SI204
John Doe
2,3,3
Matt Smith
092244
113221
smith@usna.edu
black@usna.edu
4,4
Melinda
3
Black
NN204, SI204,
IT221
090112
Tom Johnson
Johnson@usna.ed
4,2,3
u
a) Is the Students table…
A column in a relational table/database that serves as a unique identifier is called a __________.
Multiple Choice
primary identifier
foreign key
primary key
foreign identifier
Chapter 5 Solutions
Principles of Information Systems (MindTap Course List)
Ch. 5.1 - Prob. 1RQCh. 5.1 - Which attribute would you designate as the primary...Ch. 5.1 - Prob. 1CTQCh. 5.1 - Prob. 2CTQCh. 5.2 - Prob. 1RQCh. 5.2 - Prob. 2RQCh. 5.2 - Prob. 1CTQCh. 5.2 - Prob. 2CTQCh. 5.3 - Prob. 1RQCh. 5.3 - Prob. 2RQ
Ch. 5.3 - What additional questions need to be answered...Ch. 5.3 - Prob. 2CTQCh. 5.4 - Prob. 1RQCh. 5.4 - Telefonica Brasil is one of the largest...Ch. 5.4 - Prob. 1CTQCh. 5.4 - Prob. 2CTQCh. 5.5 - Prob. 1RQCh. 5.5 - Prob. 2RQCh. 5.5 - Why is it unlikely that a traditional SQL database...Ch. 5.5 - Prob. 2CTQCh. 5 - Prob. 1SATCh. 5 - Prob. 2SATCh. 5 - Prob. 3SATCh. 5 - The ______________ model is a simple but highly...Ch. 5 - The ability to combine two or more tables through...Ch. 5 - Prob. 6SATCh. 5 - Prob. 7SATCh. 5 - Prob. 8SATCh. 5 - Prob. 9SATCh. 5 - Prob. 10SATCh. 5 - Prob. 11SATCh. 5 - Prob. 12SATCh. 5 - Prob. 13SATCh. 5 - Prob. 14SATCh. 5 - Prob. 15SATCh. 5 - Prob. 16SATCh. 5 - Prob. 1RQCh. 5 - In the hierarchy of data, what is the difference...Ch. 5 - Prob. 3RQCh. 5 - What is meant by data archiving? Why is this an...Ch. 5 - What is an entity-relationship diagram, and what...Ch. 5 - Identify four basic data manipulations performed...Ch. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Prob. 16RQCh. 5 - Prob. 17RQCh. 5 - Prob. 1DQCh. 5 - Outline some specific steps an organization might...Ch. 5 - SQL databases conform to ACID properties. Briefly...Ch. 5 - Prob. 4DQCh. 5 - Prob. 6DQCh. 5 - Prob. 8DQCh. 5 - Prob. 1PSECh. 5 - Describe the role of a database administrator....Ch. 5 - Prob. 2CECh. 5 - Prob. 1CTQ1Ch. 5 - Prob. 2CTQ1Ch. 5 - Prob. 3CTQ1Ch. 5 - Prob. 1CTQ2Ch. 5 - Prob. 2CTQ2Ch. 5 - Prob. 3CTQ2
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- In the hierarchy of data, what is the difference between a data attribute and a data item? What is the domain of an attribute?arrow_forwardData standardization usually focuses on fixing _ of data while data cleaning usually focuses on fixing _ of data. A- The entity; data dictionary B- The attribute; the entity C- The entity; the attribute D- Data dictionary; the entityarrow_forwardto de Category 15 PK to do id PK category id name description create date 18 deadine FK categoryid FK user id create date user PK user id first name last name email create_date The above ER Diagram shows a simple TODO tasks management database. The create table script for Category table is given to you below. Complete the script by providing the correct definitions of the other two tables. Choose the data types of each attribute and assume all primary keys to be auto incrementing integers. Create Table Category ( user_id int primary Key identity(1,1), name varchar(255),arrow_forward
- please improe this writing: There is a big difference between time it takes to perform each of the queries. After adding primary key to each table, the time to perform each of the queries was faster than what it was before. Creating a primary key help identify unique data. Primary key in a table is a crucial column used in queries, optimized for fast performance with an associated index. The primary key index is the most efficient access path for a table. They are created after a table is created, optimizing search speed. Once constructed, indexes are internal structures that the user cannot actively access. If the internal query optimization procedure concludes that using an index will increase search efficiency, then it will be employed. When SQL queries are internally ready for execution, they automatically undergo optimization. The best way to run each query is determined by the optimization process, which may or may not include using a relevant index. Read and write speeds are…arrow_forwardWhat is the difference between a data attribute and a data item in the data hierarchy? What is an attribute's scope?arrow_forwardIf processing speed was an important requirement for a company when building out a database, what changes can a designer revise in the next database iteration if the current design has more than 95% of tables with a 1:1 relationship? Combine some tables together. Create more 1:M relationships. Create more M:N relationship. Leave the database design as isarrow_forward
- ___________identifies the table from which data should be retrieved.arrow_forward43. ___________ design and implement database structures. a. Programmers b. Project managers c. Technical writers d. Database administratorsarrow_forwardQ2: What is Factors that Influence Physical Database Design? Q3 What is different between Denormalization and normalization ? Q4: What is Tuning and its goals: Q5: what is the Transaction, Basic operations, and Basic operations command:arrow_forward
- Convert the E-R schema to a relational database schema.Be sure to include appropriate constraints.Be sure your relational schema conforms to your E-R schemaarrow_forwardIn the three-schema architecture: a. The view of a manager or other type of user is called the _____ schema.b. The view of the data architect or data administrator is called the ___ schema.c. The view of the database administrator is called the ______ schema.arrow_forwardkey attribute(s) is Select one: O a. An attribute or set of attributes that allow users to log in to database O b. An attribute or set of attributes that uniquely identifies an a relationship in ER Diagram O c. An attribute or set of attributes that uniquely identifies an entity( uniquely identifies each record in a table) O d. An attribute or set of attributes that uniquely identifies ER Diagramarrow_forward
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