Information systems Flashcards
(40 cards)
Information systems:
The combination of software, hardware and telecommunication networks, that people build and use to collect, create and distribute data in an organizational setting.
E-business:
Conducting internal business transactions using information and communication technology.
Back-end information systems:
Corporate information systems that are for internal use, and that are crucial for the infrastructure and internal operations for the organization.
Front-end information systems:
Corporate information systems that external stakeholders interact with to access back-end information systems and services.
Information landscape:
Systems that organization are using and how they interrelate.
Low code:
Approach to application development that enables developers, regardless of experience level, to leverage reusable components and model driven logic to build and deploy applications rapidly.
Business process:
Target oriented and temporal logic consequence of activities. It contributes to a business’ value creation and is customer oriented.
Collection of related events, activities & decisions that involve a number of actors and resources, and that collectively lead to an outcome that is valuable to an organization or its customers.
User centricity:
Needs of digital users must be met in every situation.
Consists of usability and user experience.
Usability:
The suitability of a product that is used by specific users in a specific user context, to effectively, efficiently and satisfactorily achieve pre-defined goals.
User experience:
extends usability by adding emotional factors, such as aesthetics, user interface design, sound, etc.
Citizen Development:
Someone who can build productively used applications without specific coding knowledge, with support of IT.
- Domain experts
- Different roles within company
- Willing to make a change
- Linked with shadow IT.
Complex systems
System that has a large number of components, or agents that interact and adapt undergoing constant change, both continuously and in interaction with their environment.
3 features of Information Systems:
- Socio-technical (objective vs. subjective).
- Transient (static vs. dynamic).
- Interconnected (bounded vs. unbounded).
3 perspectives of Information systems:
- Structural: complexity in design (objective, static, bounded).
- Perceptual: complexity in understanding (subjective, static, bounded).
- Behavioral: complexity in use (objective & subjective, dynamic, semi-bounded).
Business agility
Being able to swiftly change business and business processes beyond the normal level of flexibility to effectively manage unpredictable external and internal changes.
Enterprise architecture:
High level view of an enterprise’s business processes and IT systems, their interrelationship and the extent to which these processes and systems are shared by parts of the organization.
Goals of Enterprise architecture:
- Define the desirable future state of organization’s processes and IT systems.
- Translate principles, capabilities and goals into systems and processes that enable the organization to realize these goals. - Provide a roadmap for achieving this state.
- Detailed long term organization wide vision.
Cloud computing
Provisioning of software and hardware based services over the internet.
- Available on demand.
- Available through network access.
- Resource pooling.
- Rapid elasticity.
- Measured/metered services.
Software as a Service:
Delivery model that provides users access to hosted applications over the internet via a thin client.
Infrastructure as a Service:
Delivery model under which users rent access to raw infrastructure.
Platform as a Service:
Delivery model under which users can rent access to a platform upon which users can build their own applications and store their own data.
Service Level Agreement:
Contracts between cloud provider and cloud user that stipulate agreements on the quality of service.
- Distribution of responsibilities.
- Agreements regarding quality of service.
- Penalties of non-conformance.
Limitations of SaaS, IaaS, and PaaS:
- Metered usage
- Elasticity
- Independence
Serverless computing:
Hides server usage from developers and runs code on-demand automatically, scaled and billed only for the time the code is running.