big data
. A term used to describe data collections that are so enormous (think petabytes or larger) and complex (from sensor data to social media data) that traditional data management software, hardware, and analysis processes are incapable of dealing with them.
What is the term for data that describes other data?
Metadata
is “data that provides information about other data”. In other words, it is “data about data”. Many distinct types of metadata exist, including descriptive metadata, structural metadata, administrative metadata, reference metadata, statistical metadata and legal metadata.
What is the term used to describe enormous and complex data collections?
big data
. A term used to describe data collections that are so enormous (think petabytes or larger) and complex (from sensor data to social media data) that traditional data management software, hardware, and analysis processes are incapable of dealing with them.
Which of the following refers to a well designed organized and carefully managed collection of data?
A database
is a well-designed, organized, and carefully managed collection of data. A database management system (DBMS) consists of a group of programs used to access and manage a database as well as provide an interface between the database and its users and other application programs.
How would you define the term database How would you define the term database management system?
A database management system (DBMS) is a
software package designed to define, manipulate, retrieve and manage data in a database
. A DBMS generally manipulates the data itself, the data format, field names, record structure and file structure.
Can two sets of fields can have a common primary key?
Two sets of fields can have a common primary key. Rows are records(also called tuples) and columns are
fields
(also called attributes).
What is the smallest unit of database?
Bit (Character)
– a bit is the smallest unit of data representation (value of a bit may be a 0 or 1). Eight bits make a byte which can represent a character or a special symbol in a character code. Field – a field consists of a grouping of characters.
What are the three types of metadata?
So, if you’re not sure what the difference is between
structural metadata, administrative metadata, and descriptive metadata
(spoiler alert: those are the three main types of metadata), let’s clear up the confusion.
What are categories of data called?
There consist of two categories of categorical data, namely;
nominal data and ordinal data
. Nominal data, also known as named data is the type of data used to name variable, while ordinal data is a type of data with a scale or order to it. Categorical data is qualitative.
What is an example of metadata?
Metadata is data about data. … A simple example of metadata for a document might include
a collection of information like the author, file size, the date the document was created, and keywords to describe the document
. Metadata for a music file might include the artist’s name, the album, and the year it was released.
What is the role of data records in an application?
Applications often require access to data that is used to process cases but is not directly part of the application. Data records
provide values for the fields associated with a particular data type and can be stored outside the case
. … Data records define permissible values for data fields.
Why are structural records used?
Why are structural records used? Structural records
allow the analyst to develop the data dictionary and the data flow diagrams using a top-down approach
. Describe the difference between base elements and derived elements.
Is a detailed description of all data used in a database?
Data dictionary
is a detailed description of all the data used in the database. Structured Query Language is a standard computer language for relational database management and data manipulation.
What are 3 database examples?
Some examples of popular database software or DBMSs include
MySQL, Microsoft Access, Microsoft SQL Server, FileMaker Pro, Oracle Database, and dBASE
.
What is data model explain?
A data model refers to
the logical inter-relationships and data flow between different data elements involved in the information world
. It also documents the way data is stored and retrieved. … Data models help represent what data is required and what format is to be used for different business processes.
What are the 4 types of database?
- 1) Centralized Database. …
- 2) Distributed Database. …
- 3) Relational Database. …
- 4) NoSQL Database. …
- 5) Cloud Database. …
- 6) Object-oriented Databases. …
- 7) Hierarchical Databases. …
- 8) Network Databases.
