what is a system development process of creating and maintaining information systems involves all five components of IS model requires establishing system goals setting up the project determining requirements business knowledge and management skill what are the five phases of the SDLC system definition requirements analysis component design implementation maintenance why is system development difficult and risky many projects never finish. Often 200-300% over budget some finish within budget and schedule diseconomies of scale brooks law "adding more people to a late project makes the project later" new staff must be trained by productive members form a project team typical development team systems analyst/ or business analyst managers programmers software testers users out...
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business intelligence systems
what are typical uses for BI identify changes in purchasing patterns important life events cause customers to change what they buy BI for entertainment netflix has data on watching, listening, and rental habits, however, determines what people actually want, not what they say predictive policing analyze data on past crimes, including location, date, time, day of week, type of crime, and related data, to predict where crimes are likely to occur \ how do organizations uses data warehouses and data marts possible problems with source data dirty data missing values inconsistent data data not integrated big data volume velocity hadoop open- source program supported by apache foundation 2 unsopervised vs supervised data mining unsupervised analysts do not create a model or hypothesis before runing an analysis cluster analysis s...
Social Media information system
Social Media (SM) Use of IT to support content sharing among networks of users enables communities, tribes, or hives people related by common interest social media information system (SMIS) supports sharing of content among networks of users Social capital is determined by the number of contacts and the relationship and the resources controlled
how do CRM, ERP, and EAI Support Enterprise Systems help organizations rethink how they do work inherent process prebuilt procedures based upon "industry best practices" save money and time in business process engineering eliminate costs of developing complex applications in-house CRM applications sales applications ERP includes additional modules Enterprise Application Integration (EAI) links departmental silos together enables communicating what are challenges when implementing enterprise systems four primary factors collaborative management using committees and steering groups identify requirements gaps transition problems - implement while continuing to run the business managing employee resist via communication, self-efficacy, positive incentives how does this knowledge help you helps understand levels of information systems and problems at each level...
how do information systems vary by scope scope - focus, size, included and not included or how big it is integrate all departments- key purpose of an ERP system how do enterprise system solve the problems of Departmental Silos sales and marketing lead generation lead tracking customer management sales forecasting product and brand management operations order entry order managment finished- goods inventory managment manufacturing inventory ( raw materials, goods-in-process) planning scheduling operations customer sevice order tracking account tracking customer support human resources recruiting compensation assessment HR planning accounting general ledger financial reporting cost accounting accounts receivable accounts payable c...
study guide
cloud computing - the elastic leasing of pooled computer resources over the internet elastic it can flex computer resources cause you pooled - virtualization iaas - infrastructure as a service virtual private network ( vpn) content delivery network advantages and disadvantages web services private cloud argument of the private cloud why do companies build a private cloud why some people think that a private cloud isn't really a cloud advantages and disadvantages of a private cloud consequences of cloud computing the difference between http and https https is secure what is the difference between cloud based and in house hosting advantages and disadvantages what is the difference between database and DBMS difference between relational and non relational DBMS why do companies want a nosql database why do some companies wont be ...
software DBMS created to add special-purpose features and functions on top of of raw GIS mapping capability data external geospatial data open people common types of GIS applications casual users BI Users Developers Operations Personnel Field Personnel how ar GIS constructed raster maps pixels usually color value easy to create vector maps points, lines, and shapes difficult to create scale perfectly mapping the earth elevations shape of the earth map projection a technique for placing locations on the surface of the earth on to a flat surface
business process managment
a network of activities for accomplishing a business data flow - movement of data reasons why processes need to be changed the efficiency or effectiveness of the process BPM ( business process management) a systematic approach organizations workflow more efficient fourstages of bpm model processes create components implement processes asses results the role of COBIT ensures quality information systems that include several business process human resource information system comprise of two or more business processes problems unable to integrate future programs well off the shelf more likely to have more applicable package for all users factors that cause business problems poorly designed business processes: overlap inter department