Exam 1 Review

Exam 1 Review - Exam 1 Review Chapters and Concepts covered...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Exam 1 Review Chapters and Concepts covered in the first exam. Chapter 1 Enterprise Information System – An organization established to achieve a particular undertaking involving industrious, systematic activity; may be profit driven or charitably motivated. – The network of all communication channels used with an organization. Chapter 1 –cont­ Integrated Stovepiped – Joined together, united, made into a whole by having brought all parts together – Not integrated – Different areas develop different systems which are not integrated – To store enterprise information one time to be used by many to make different decisions and reduce data redundancy (duplicated data) REA Ontology’s objective Chapter 2 REA Enterprise Ontology – Resources – things of economic value that are provided or consumed by the enterprise’s activities – Events – activities within the enterprise – Agents – individuals or areas that participate in the Control and execution of the event Chapter 2 –cont­ 1. 2. 3. 4. REA Ontology views enterprises at 4 levels of detail Value System Value Chain Business Process Task Level Chapter 2 –cont­ Types Token – A category into which individual objects may be classified – An individual object. Uses a separate representation for each individual instance. Chapter 3 Porter’s Value Chain – Primary Value Activities Inbound – activities associated with receiving, storing and disseminating inputs to the products or services Operations – activities associated with transforming inputs into the final products or services Outbound – activities associated with collecting, storing and distributing the products or services. Chapter 3 –cont­ Porters Value Chain continued – Primary Value –cont­ Marketing and Sales – activities associated with providing a means by which customers can buy produce and the means for inducing them to buy. Service – activities associated with providing service to enhance or maintain the value of products or services. Chapter 3 –cont­ Porter’s Value Chain continued – Support Value Activities Procurement – purchasing inputs to firms value chain Technology Development – the know­how, procedures or technology embedded in the processes that improve the product or service Human Resource Management – recruiting, hiring, training, developing, and compensating personnel. Firm Infrastructure – activities that support entire value chain (management, planning, financing, etc..) Chapter 3 –cont­ Value System Level REA Modeling – Identify a enterprise’s resource inflows and outflows – Identify the external business partners to which and from which the resources flow Chapter 4 Entities Relationships Attributes – Sets of real world objects – Associations between entities – Characteristics of entities or relationships Simple – an attribute that cannot be further decomposed. Chapter 4 –cont­ Attributes continued Composite – may be decomposed into other attributes Derived – can be computed from values of other attributes Chapter 4 – cont­ Participation Cardinalities (Min,Max) – Minimum cardinality – the minimum number of times one instance of an entity set must participate in a relationship 0=participation is optional 1=mandatory particpation Chapter 4 –cont­ Participation Cardinalities (Min,Max) – Maximum cardinality – the maximum number of times one instance of an entity set must participate in a relationship 1=one­time only N – no restriction Chapter 4 –cont­ 1. 2. 3. 4. 5. 6. 7. 7 Steps needed to create a Core Pattern Business Level REA Model Identify economic exchange events Attach Resource to the Economic Events Attach External Agents to Economic Events Attach Internal Agents to Economic Events Assign Attributes Assign Participation Cardinality Validate Model Chapter 5 System Flowcharts – Graphical – Focus on the physical aspects of information flows – Uses symbols, flow lines and area of responsibility Chapter 5 –cont­ Flowchart Symbols Chapter 5 –cont­ Flow Lines – Used to connect the symbols – Solid line indicates the flow of a document or object – Dotted line or dashes indicates the flow of communicated rather than the physical document – Arrows are used when the document or information flow is not left­to­right or top­to­ bottom Chapter 5 –cont­ File Types – Master Files – Transaction Files Contain the balance or status­usually static information. Updated by transaction files Contain activity data. Contain inactive data – History or Archived Files – Reference Files – Suspense Files Contain information needed for reference purposes Contain items awaiting action Chapter 5 –cont­ Storage and Access of Data Sequential Storage and Sequential Access Records are stored in order To access a record, the access device must read through all records that are stored previous to the desired record – Tape cartridges and open reel tapes require sequential storage and sequential access of data – – Chapter 5 –cont­ Random Storage and Direct Access – Records are stored in any order – Any record can be retrieved directly regardless of physical position on the media; the access device need not read all the records prior to the desired record – Computer hard disks, floppy disks, zip disks, CD­ROMs, and DVD­ROMs allow random storage and direct access of data ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online