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NR 360 Week 5 Discussion From Data to Knowledge and Wisdom With Answer GUARANTEED PASS
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NR 360 Week 5 Discussion From Data to Knowledge and Wisdom With Answer GUARANTEED PASS
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NR 360 Week 5 Discussion From Data to Knowledgeand Wisdom With Answer GUARANTEED PASS
Digital Data - ANSWER: Information stored in various media types, can be stored in
what we call the traditional file format
Traditional File Format - ANSWER: different pieces of information are not labeled
and categorized but are stored as continuous string of bytes.
traditional file approach - ANSWER: which has no mechanism for tagging, retrieving,
and manipulating data
traditional file approach - ANSWER: low data integrity.
database approach - ANSWER: does have mechanism for tagging, retrieving, and
manipulating data
Data Dependency- - ANSWER: sequential file storage
Data Redundancy - ANSWER: Existence of the same data in multiple database
locations.
Database Approach - ANSWER: Maintains and manipulates data about entities,
improving data integrity and accessibility.
Entity - ANSWER: Any object for which data is collected.
Character - ANSWER: Smallest piece of data, such as a single letter.
Field - ANSWER: A specific piece of information about an entity, like a name.
Record - ANSWER: A collection of related fields about an entity.
File - ANSWER: A collection of related records.
Database Management System (DBMS) - ANSWER: Software to build, store, and
manipulate databases.
Queries - ANSWER: Messages sent to retrieve or manipulate specific data fields in a
database.
Security - ANSWER: use of database raises security and privacy issues. Measures for
limiting access to certain data fields or records in a database.
Traditional File Approach - ANSWER: Data storage method prioritizing efficiency and
simplicity and customization.
, Database Advantage - ANSWER: reduced data redundancy, application-data
independence, better control, flexibility
Database Model - ANSWER: general Logical structure records are stored within a
database, which affects navigation and retrieval.
Hierarchical Model - ANSWER: Database model structured like an upside-down tree.
Network Model - ANSWER: bility to store a record only once in the entire database.
Network model would allow the same record to be linked to more than one parent.
Relational Model - ANSWER: has all the advantages of a network database without
the complications. using tables, simplifying data retrieval.
Key - ANSWER: Field used to identify records for display or processing.
Primary Key - ANSWER: Unique identifier for records, ensuring accurate retrieval.
Linking - ANSWER: Connecting records across tables using common fields.
Object Oriented Structure - ANSWER: bject consists of both data and the procedures
that manipulate the data.
inheritance. - ANSWER: The ability in object-oriented structures to automatically
creates a new object by replicating all or some of the characteristics of a previously
developed object (called the parent object) is called
Entity Relationship Diagram (ERD) - ANSWER: - Visual representation of relationships
between database entities.
Schema - ANSWER: Blueprint describing the structure of a database.
Types of Data - ANSWER: fields can hold different types of data: numeric,
alphanumeric, graphic or time related
Building a Database - ANSWER: Once the schema is complete, users may start
entering values in the tables.
Data Dictionary - ANSWER: notation of who is responsible for updating each part of
the database and descriptions or names of the people who are authorized to access
the different parts of database
data dictionary - ANSWER: are often referred to as "metadata", They are useful when
trying to understand a database designed by someone else.
"metadata", meaning " - ANSWER: data about the data".
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