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INFORMATION SYSTEMS WITH DATABASES - Coggle Diagram
INFORMATION SYSTEMS WITH
DATABASES
Databases
A unified set of stored and reproduced data
Data obtained internal structure
Set of data processing operations
Data obtained some ordering
Declarative tools of data representation –
language of the data definition
Data becomes organized
Data Manipulation
Language
Algorithmic tools of constructing applications
Processing data elements
Problem domain is a part of the real world
Conceptual schema documents the PD conceptual
Data Definition
Language
Describe way of storing data
Describe way of accessing data
Describe a logical schema
Conceptual model characterize the possible state of the PD
External Level
Provides data representation in a convenient way
Solving the problem of data security and logical data independence
Internal Level
Describes storage structures and access methods
Solving the problem of physical data
independence
Provides DB configuration
DBMS is a collection of software tools needed to use the DB
Information Systems
Main purpose is to meet the information needs of users
Set of means, processes and personnel that realize all dunctions are needed for information
Automated IS is a complex hardware and software complexes, technologies and personnel
Components
Middleware
Linguistic Support
Indexing texts
Classification text
Thematic rubricating
Communications
Hardware nework communication
Software support
Organizational Support
Management of components and operations
Software
System software
Custom software
Technical Support
Hardware
Special technical devices
Data transmission
Computer devices
Information and Data
Information is a unit of data to be processed
Data is a information in a certain, fixed form
Information comes to the consumer in the form of data
Transformations in an IS: Information -> Data -> Information
Representative Content
Presentation of information
through data
Grouping data into
documents
Structuring of documents
Presentation of documents in
different forms
Functional Content
Generation and presentation of
information in a specific form
Data processing
Information transfer in various
ways