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A statistical function commonly used to describe a group of data?
A group of data is a sample.
Describe what is meant by digital data?
data that can read barcodes
What are the numbers used to describe the center of a set of data?
data pattern
What is the term that is used to describe data that does not fit with the rest of the data?
Outliers
What are three features of reliable data?
what are three features of reliable data?
A statistical function commonly used to describe a group of data?
A group of data is a sample.
What measurement is commonly used to describe communication speed when transferring data?
bps
Define data models and list different types of data models?
A data model is a collection of concepts that can be used to describe the structure of a database and provides the necessary means to achieve this abstraction whereas structure of a database means the data types,relationships and constraints that should hold on the data. Data model are divided into three different groups they are 1)object based logical model 2)record based logical models 3)physical models Types: Entity-Relationship (E-R) Data Model Object-Oriented Data Model Physical Data Model functional data model
What are data models in dbms?
A data model is a collection of concepts that can be used to describe the structure of a database. Data models can be broadly distinguished into 3 main categories- 1)high-level or conceptual data models (based on entities & relationships) It provides concepts that are close to the way many users perceive data. 2)lowlevel or physical data models It provides concepts that describe the details of how data is stored in the computer. These concepts are meant for computer specialist, not for typical end users. 3)representational or implementation data models (record-based,object-oriented) It provide concepts that can be understood by end users. These hide some details of data storage but can be implemented on a computer system directly.
Single number commonly used to describe the variation in a data distribution?
the anwer is 5
What are the Classification of data model?
Data models can be classified into three main categories: conceptual data model (high-level view of the data and its relationships), logical data model (detailed structure of the data and relationships), and physical data model (implementation of the database design on a specific database management system).
The three characteristics that describe a set of numerical data are?
mode, mean and median
Discuss the main categories of data models?
The main categories of data models are conceptual, logical, and physical. Conceptual data models represent high-level concepts and relationships between different data elements, focusing on understanding the business requirements. Logical data models map the conceptual model into a specific data storage technology, translating the conceptual model into a more structured format. Physical data models define how data will be stored, organized, and accessed in a specific database system, incorporating details like tables, columns, keys, and indexes.
What are the different data model in DBMS?
The main data models in database management systems are relational, hierarchical, network, and object-oriented. Relational data model organizes data into tables with rows and columns. Hierarchical data model organizes data in a tree-like structure. Network data model allows each record to have multiple parent and child records. Object-oriented data model represents data as objects.
What is synthetic data?
Synthetic data is artificially generated data that mimics the statistical properties and patterns of real data. It is commonly used in situations where real data may be sensitive or difficult to obtain, allowing researchers and developers to test algorithms and models without privacy concerns.
How Do You describe the shape of a data set?
You describe the shape, not of the data set, but of its density function.You describe the shape, not of the data set, but of its density function.You describe the shape, not of the data set, but of its density function.You describe the shape, not of the data set, but of its density function.
What are the types of database?
There are three database models. The three database models are as follows : 1) relational 2) network data 3) hierarchical
