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Theory of the Firm (Coase 1937)
Firms are established because it is profitable to do so.
Firms organise to reduce the transaction costs of repeated and complicated activities involved in creating, selling and distributing goods and services.
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Contract and Agency Theory (Fama 1980, Jensen, Meckling)
There are costs in using the price mechanism; firms can save costs.
Most obvious cost of organising production through price mechanism is negotiating and writing a contract.
Ownership of a firm is seperate from its management as postulated in Agency Theory.
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Drivers of Business and Information Systems Change
Globalisation
Deregulation
Advances in technology (Metcalfe's Law, Moore's Law)
Outsourcing and downsizing
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Business Pressures and Responses
Pressure on business
Organisational response
Contracting relationships
Information systems ERP, intranet, external
Demand for new technologies
Network/Internet advances
(repeat/cycle)
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System
Set of two or more interrelated components interacting to achieve a goal.
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Goal Conflict
Occurs when components act in their own interest without regard for the overall goal.
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Goal Congruence
Occurs when components acting in their own interest contribute toward the overall goal.
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Data
Facts that are collected, recorded, stored and processed.
Insufficient for decision making.
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Information
Processed data used in decision making.
Too much information makes decision making harder (Data/Information overload)
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Value of Information
- Benefits
- - Reduce uncertainty
- - Improve decisions
- - Improve planning
- - Improve scheduling
- Costs
- - Time and resources
- - Produce information
- - Distribute information
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Useful Information Characteristics
- Relevant
- Reliable
- Existence
- Valid
- Complete
- Timely
- Measurable
- Understandable
- Verifiable
- Accessible
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Transaction
Agreement between two entities to exchange goods or services.
Affects the financial position of the business.
Can be reliably recorded.
'Give-get' exchange
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Accounting Information Systems
Simple = pencil and paper
Complex = State of the art system, latest computers and information technology.
(Same process)
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Components of AIS
People using the system
Procedures and instructions (For collecting, processing and storing data)
Data
Software
Information Technology Infrastructure (Computers, peripherals, networks...)
Internal Control System (Safeguard system and data)
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AIS Value Added
- Improve...
- - Quality and reduce costs
- - Efficiency and effectiveness
- - Sharing knowledge
- - Supply chain
- - Internal control
- - Decision making
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Improve Decision Making
Identify situations that require action.
Reduce uncertainty.
Provide alternative choices.
Provide feedback on previous decisions.
Provide accurate and timely information.
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Value Chain
- Primary Activities
- - Inbound logistics
- - Operations
- - Outbound logistics
- - Marketing Sales
- - Service
- Support Activities
- - Firm infrastructure
- - Human resources
- - Technology
- - Purchasing
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Data Inout - Capture
Each activity of interest
Resource(s) affected by each activity
People who participate in each activity
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Data Input - Accuracy and Control
- Accurate
- - Provide instructions and prompts
- - Check boxes
- - Drop down boxes
- Control
- - Internal control support
- - Pre-numbered documents
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Data Storage
- Paper-based
- - Ledgers
- - Journals
- Computer-based
- - Entity
- - Attributes
- - Fields
- - Records
- - File (Transaction, Master, Database)
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Ledgers
- General
- - Summary level data for each (Asset, liability, equity, revenue and expense)
- Subsidiary
- - Detailed data for a General Ledger (Control) Account that has individual sub-accounts (A/R, A/P)
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Journals
- General
- - Infrequent or specialised transactions
- Specialised
- - Repetitive transactions (sales...)
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Coding Techniques
- Sequence
- Group
- Mnemonic
- Chart of Accounts (Block coding)
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Data Processing
Create new data records
Read, retrieve or view existing data records
Update existing stored data records
Delete data or records
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Enterprise Resource Planning (ERP) Integration Systems
- Financial
- Human resources and payroll
- Order to cash
- Purchase to pay
- Manufacturing
- Project Management
- Customer relationship management
- System tools
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Enterprise Resource Planning (ERP) Advantages
Integration of organisation's data and financial information
Data is captured once
Greater management visibility, increased monitoring
Better access controls
Standardises business operating procedures
Improved customer service
More efficient manufacturing
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ERP Disadvantages
Cost
Time-consuming to implement
Changes to an organisations existing business processes can be disruptive
Complex
Resistance to change
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