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Chapter 3: enterprise systems architecture
Enterprise Systems for management: Motiwalla and Thompson (SFSU ISYS 363)
29
Management
Undergraduate 3
05/17/2012

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Term
ERP systems architecture articulates the relationships among complex information technology components which include____________
Definition
hardware, software, data
which involves company structures, business rules, and people
Term
production module
Definition
helps in planning and optimizing the manufacturing capacity, parts, components and material resources using historical production data and sales forecasting
Term
purchasing module
Definition
streamlines procurement process of raw materials and other supplies. is tightly integrated with the inventory control and production planning modules
Term
inventory management module
Definition
facilitates the processes of maintaining the appropriate level of stock in a warehouse
Term
sales and marketing module
Definition
implements functions of order placement, order scheduling, shipping and invoicing
Term
finance module
Definition
gather financial data from the various functional departments and generate valuable financial reports
Term
human resource module
Definition
streamlines the management of human resources and human capital
Term
business intelligence modules
Definition
offers tools and data warehousing capabilities to display real-time information through reports and to monitor historical trends
Term
data tier
Definition
focuses on the structure of organizational data and its relationship with internal and external systems.

typically has SQL Inquiry and Report Writer tools for advanced users
Term
application tier
Definition
where data is entered and shared with components of the system; shields business users from the inner workings of an ERP system
Term
JDBC
Definition
java database connection

(in application tier to allow legacy or 3rd party integration)
Term
Industry standards for application tier APIs for 3rd party integration are
Definition
J2EE and .NET
Term
web tier
Definition
web-based service portal allows users the ability to access and analyze information through their Web browser
Term
network and capacity ____________ are as crucial as planning and deploying of ERP systems
Definition
planning
Term
OLAP
Definition
online analytical processing is the foundation of business intelligence module in ERP
Term
three tier architecture
Definition
web tier, application tier, data tier
Term
web tier
Definition
includes web servers that a client interacts with for application access, where GUI apps reside and data is inputted, requests for information submitted
Term
____________ is very important in the web tier as this is the front door to an organization's ERP system
Definition
network security
Term
application tier
Definition
provides components to apply the business logic of the functional modules; includes components that are function specific but not silo'd (are reusable objects of business process rules that can be reassembled)
Term
____________ for the data tier should be as stringent as for the web tier
Definition
security
Term
data tier
Definition
responsible for data management
provides central repository for all data that are shared between functional modules and maintains the integrity of the data transferred to and from the clients and servers
Term
three-tier approach is better than older two-tier approach because ____________
Definition
improves performance for large number of users and improves flexibility
Term
benefits of three-tier applications
Definition
scalability
reliability
flexibility
maintainability
reusability
security
Term
limitations of three-tier applications
Definition
economics
complexity
Term
web service architecture benefits
Definition
provide a wide range of end users with access to ERP applications and make it easier to integrate their ERP applications with existing internal systems and external trading partner systems
Term
service-oriented architectures (SOA)
Definition
object-oriented architectures for Web platforms
Term
cloud computing
Definition
software service provided over the Internet, securely by a service provider on a monthly or yearly lease
Term
benefits of clouding
Definition
reduced capital and operating expenditures
accessed from everywhere with internet
no need to install anything
no maintenance fees for software or hardware
promotes green computing
dynamic scalability on demand
Term
drawbacks to clouding
Definition
data security
vulnerability
possible conflict of interest
not suited for industry (biotech) where intellectual property cannot be easily protected
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