cis1200
The ____ relationship should be rare in any relational database design. Question options:1:1 1:M M:1 M:N
1:1
The ____ serve(s) as the intermediary between the user and the database. Question options:DBMS metadata end-user data programming language
DBMS
Codd's Rule of ____ states:Application programs and ad hoc facilities are logically unaffected when changes are made to the table structures that preserve the original table values (changing order of columns or inserting columns). Question options:Nonsubversion Logical Data Independence Comprehensive Data Sublanguage Integrity Independence
Logical Data Independence
____ is a set of tools that work together to provide an advanced data analysis environment for retrieving, processing, and modeling data from the data warehouse. Question options:Online analytical processing Semistructured processing Enterprise processing XML processing
Online analytical processing
Which of the following is true of business rules? Question options:They allow the designer to set company policies with regard to data. They allow the designer to develop business processes. They can serve as a communication tool between the users and designers. They provide a framework for the company's self actualization.
They can serve as a communication tool between the users and designers.
A(n) ____ might be written by a programmer or it might be created through a DBMS utility program. Question options:query operating system database management system application program
application program
A(n) ____ is the equivalent of a field in a file system. Question options:attribute entity relationship constraint
attribute
Another name for a composite entity is a ____ entity. Question options:bridge linked directive referring
bridge
A ____ key can be described as a superkey without unnecessary attributes, that is, a minimal superkey. Question options:secondary candidate primary foreign
candidate
A(n) ____ model represents a global view of the database as viewed by the entire organization. external conceptual internal physical
conceptual
The ERD represents the ____ database as viewed by the end user. Question options:condensed physical logical conceptual
conceptual
A(n) ____ is a restriction placed on the data. Question options:attribute entity relationship constraint
constraint
____ are normally expressed in the form of rules. Question options:Attributes Entities Relationships Constraints
constraints
A(n) ____ enables a database administrator to define schema components. Question options:extensible markup language (XML) data definition language (DDL) unified modeling language (UML) query language
data definition language (DDL)
The phrase ____ refers to an organization of components that define and regulate the collection, storage, management and use of data within a database environment. Question options:database management system database management management system database system
database system
In the context of a database table, the statement "A ____ B" indicates that if you know the value of attribute A, you can look up the value of attribute B. Question options:contains is related to owns determines
determines
The set of possible values for an attribute is a ____. Question options:domain range set key
domain
A(n) ____ database is used by an organization and supports many users across many departments. Question options:desktop workgroup enterprise transactional
enterprise
A CUSTOMER table's primary key is CUS_CODE. The CUSTOMER primary key column has no null entries, and all entries are unique. This is an example of ____ integrity. Question options:entity referential complete null
entity
A noun in a business rule translates to a(n) ____ in the data model. Question options:entity attribute relationship constraint
entity
The ____ model uses the term connectivity to label the relationship types. Question options:relational network object-oriented entity relationship
entity relationship
The ____ model was developed to allow designers to use a graphical tool to examine structures rather than describing them with text. hierarchical network object-oriented entity relationship
entity relationship
A foreign key must exist in both tables that have a relationship. Question options:TrueFalse
false
A manager and a programmer usually have the same view of the same data. Question options:TrueFalse
false
A query language is a procedural language. Question options:TrueFalse
false
A weak relationship exists if the primary key of the related entity contains at least one primary key component of the parent entity. Question options:TrueFalse
false
An ERM is dependent on the database type. Question options:TrueFalse
false
An operational database is sometimes referred to as an enterprise database. Question options:TrueFalse
false
Attributes are types of entities. Question options:TrueFalse
false
Attributes cannot share a domain. Question options:TrueFalse
false
Attributes have a domain that specifies the data type of the attribute. Question options:TrueFalse
false
Business rules apply to businesses and government groups, but not to other types of organizations such as religious groups or research laboratories. Question options:TrueFalse
false
Character data can contain any character or symbol intended for mathematical manipulation. Question options:TrueFalse
false
Data and information are essentially the same thing.
false
Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests. Question options:TrueFalse
false
Derived attributes are stored in a special database table. Question options:TrueFalse
false
End-user interfaces require the end user to manually generate SQL code. Question options:TrueFalse
false
In Chen notation, there is no way to represent cardinality. Question options:TrueFalse
false
In an ER diagram, primary keys are usually bolded. Question options:TrueFalse
false
Information implies familiarity, awareness, and understanding knowledge as it applies to an environment.
false
One advantage of a database system over previous data management approaches is that the database system is considerably less complex. Question options:TrueFalse
false
Referential and entity integrity are two names for the same thing. Question options:TrueFalse
false
The existence of a mandatory relationship indicates that the minimum cardinality is 0 or 1 for the mandatory entity. Question options:TrueFalse
false
The idea of determination is unique to the database environment. Question options:TrueFalse
false
The one-to-many (1:M) relationship is easily implemented in the relational model by putting the foreign key of the "1" side in the table of the "many" side as a primary key. Question options:TrueFalse
false
The order of the rows and columns is important to the DBMS. Question options:TrueFalse
false
The relational model is hardware-dependent and software-independent. Question options:TrueFalse
false
There is never a good reason to use null values in a database. Question options:TrueFalse
false
A ____ is a character or group of characters that has a specific meaning. Question options:database field record file
field
In the ____ model, each parent can have many children, but each child has only one parent. Question options:hierarchical network relational entity relationship
hierarchical
One of the limitations of the ____ model is that there is a lack of standards. Question options:hierarchical network relational entity relationship
hierarchical
____ is used to reveal the meaning of data. Question options:Raw facts Knowledge Formatting Information
information
A(n) ____ join only returns matched records from the tables that are being joined. Question options:outer inner direct union
inner
____ yields only the rows that appear in both tables. Question options:INTERSECT UNION DIFFERENCE SELECT
intersect
The organization of the data within the folders in a manual file system was determined by ____. Question options:the date of creation its expected use the title of the documents in the folder the data processing specialist
its expected use
____ data can have only a true or false (yes or no) values. Question options:Logical Character Date Numeric
logical
A(n) ____'s main function is to help you understand the complexities of the real-world environment. Question options:constraint entity model database
model
A(n) ____ join links tables by selecting only the rows with common values in their common attribute(s). Question options:equal unique foreign natural
natural
No data entry at all is known as a(n) ____. Question options:nil null empty zero
null
Ideally, an entity identifier is composed of ____ attribute(s). Question options:zero one two six
one
____ logic, used extensively in mathematics, provides a framework in which an assertion (statement of fact) can be verified as either true or false. Question options:Predicate Database Relational Index
predicate
Since it is used to link the tables that originally were related in a M:N relationship, the composite entity structure includes—as foreign keys—at least the ____ keys of the tables that are to be linked. Question options:composite super primary unique
primary
End-user data is ____. Question options:raw facts about the end-user raw facts of interest to the end-user data about data accurate, relevant and timely information
raw facts of interest to the end-user
Controlled ____ makes a relational database work. Question options:relations logic chaos redundancy
redundancy
A verb associating two nouns in a business rule translates to a(n) ____ in the data model. Question options:entity attribute relationship constraint
relationship
To be considered minimally relational, the DBMS must support the key relational operators ____, PROJECT, and JOIN. Question options:INTERSECT UNION DIFFERENCE SELECT
select
A desktop database is a ____ database. Question options:single-user multiuser workgroup distributed
single user
Which of the following is an example of structured data? Question options:A Web page An e-mail A memo A spreadsheet
spreadsheet
A ____ is any key that uniquely identifies each row. Question options:superkey special selective candidate
superkey
In a database context, a(n) ____ indicates the use of different names to describe the same attribute. Question options:entity duplicate synonym homonym
synonym
The ____ is actually a system-created database whose tables store the user/designer-created database characteristics and contents. Question options:meta dictionary schema data dictionary system catalog
system catalog
A(n) ____ is perceived as a two-dimensional structure composed of rows and columns. Question options:table rowset attribute intersection
table
A(n) ____ database is designed to support a company's day-to-day operations. Question options:desktop workgroup enterprise transactional
transactional
A data dictionary contains metadata—data about data. Question options:TrueFalse
true
A data model is usually graphical. Question options:TrueFalse
true
A data warehouse can store data derived from many sources. Question options:TrueFalse
true
A left outer join on tables CUSTOMER and AGENT yields all of the rows in the CUSTOMER table, including those that do not have a matching value in the AGENT table. Question options:TrueFalse
true
A null is created when you press the Enter key or the Tab key to move to the next entry without making a prior entry of any kind. Question options:TrueFalse
true
A recursive relationship is one in which a relationship can exist between occurrences of the same entity set Question options:TrueFalse
true
All attributes are either simple or composite. Question options:TrueFalse
true
Connectivities and cardinalities are established by business rules. Question options:TrueFalse
true
DBMSs use indexes for many different purposes. Question options:TrueFalse
true
Each row in the relational table is known as an entity instance or entity occurrence in the ER model. Question options:TrueFalse
true
If the attribute (B) is functionally dependent on a composite key (A) but not on any subset of that composite key, the attribute (B) is fully functionally dependent on (A). Question options:TrueFalse
true
In an SQL-based relational database, rows in different tables are related based on common values in common attributes. Question options:TrueFalse
true
In both the Chen and Crow's Foot models, an entity is represented with a rectangle containing the entity's name. Question options:TrueFalse
true
In the Chen model, a multivalued attribute is connected to the owning entity with a double line. Question options:TrueFalse
true
Initially the files within a computer file system were similar to manual files. Question options:TrueFalse
true
Metadata present a more complete picture of the data in the database than the data itself. Question options:TrueFalse
true
Tables must have the same attribute characteristics (the columns and domains must be compatible) to be used in a UNION. Question options:TrueFalse
true
The DIVIDE operation uses one single-column table (e.g., column "a") as the divisor and one two-column table (e.g., columns "a" and "b") as the dividend. Question options:TrueFalse
true
The ER diagram represents the conceptual database as viewed by the end user. Question options:TrueFalse
true
The entity relationship model is limited to conceptual modeling, with no implementation component. Question options:TrueFalse
true
The practical significance of taking the logical view of a database is that it serves as a reminder of the simple file concept of data storage. Question options:TrueFalse
true
The same data might be simultaneously structured and unstructured depending on the intended processing. Question options:TrueFalse
true
Today, most relational database products can be classified as object/relational. Question options:TrueFalse
true
Within the database environment, a data model represents data structures with the purpose of supporting a specific problem domain. Question options:TrueFalse
true
____ combines all rows from two tables, excluding duplicate rows. Question options:INTERSECT UNION DIFFERENCE SELECT
union
____ data exist in a format that does not lend itself to processing that yields information. Question options:Structured Semistructured Unstructured Historical
unstructured
A(n) ____ database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization. Question options:desktop workgroup enterprise transactional
workgroup
