Database development (MIS 533) MBS in Management Information Systems and Managerial Accounting Systems (2007 / 2008) Fergal Carton Business Information Systems

MBS (MIMAS) / MIS533 / Database development MIS533 Database development Wednesday pm, Aras na Laoi 9 Lecturer : Fergal Carton Name: Fergal Carton Phone: Office:Room 2.113, O’Rahilly Building Web:

MBS (MIMAS) / MIS533 / Database development Course Objective This course deals with planning, developing and managing database environments. It will introduce students to the ways in which database management systems (DBMS) can support business process and management information requirements.

MBS (MIMAS) / MIS533 / Database development Topics covered Systems Analysis and Design methodologies Requirements analysis Process modelling (DFD’s) Data modelling (ERD’s and normalisation) SQL and database systems (Data Warehousing) Single instance database systems Database development (Access and Oracle)

MBS (MIMAS) / MIS533 / Database development Assessment dates A practical exam (20%) which will be the development of a database system: –Eg. system to support playlist generation –Scenario to be distributed by mid November –Deadline December An Oracle and SQL assessment (20%) will take place during lab practical hours in the 2nd term.

MBS (MIMAS) / MIS533 / Database development Tutorials in B.04 Wednesdays Thursdays – Database development –Access (1 st term) –Oracle and SQL (2 nd term) –SQL Server admin (2 nd term) Tutors: –James Northridge –Jessica Doyle NB: tutorial on Weds 17 th Oct at will be replaced by a placement preparation workshop (Maire Kavanagh)

MBS (MIMAS) / MIS533 / Database development Database manuals Available within next 2 weeks 2007 price was €15 Katie Dineen to distribute

MBS (MIMAS) / MIS533 / Database development Recommended reading Database Solutions –A step by step guide to building databases Thomas Connolly & Carolyn Begg Publisher : Addison Wesley Concepts of Database Management Philip Pratt & Joseph Adamski, 4 th edition Publisher : Thomson Course Technology

MBS (MIMAS) / MIS533 / Database development Recommended reading

MBS (MIMAS) / MIS533 / Database development Recommended reading

MBS (MIMAS) / MIS533 / Database development This week Why do we need databases? Systems Analysis and Design methodologies

MBS (MIMAS) / MIS533 / Database development Why do we need databases? Reduces possibility of error Volume of information Speed of transaction processing

MBS (MIMAS) / MIS533 / Database development Understanding requirements Why do we need information systems? Reduces possibility of error (eg. same seat not allocated to 2 passengers) Volume of information (eg. all possible flights and connections) Speed of transaction (eg. immediate confirmation at point of sale)

MBS (MIMAS) / MIS533 / Database development Definitons : Analysis & Design Analysis : what users need the system to do Design : how the system will meet the need

MBS (MIMAS) / MIS533 / Database development Analysis = listening

MBS (MIMAS) / MIS533 / Database development Business requirements

MBS (MIMAS) / MIS533 / Database development Background to SA & SD Output Oriented Process oriented : DFD’s Data-Oriented (ERD’s)

MBS (MIMAS) / MIS533 / Database development What’s the best approach? Failings of these methods –Maintenance Lack of flexibility Resilience Quality –Re-usability of code –Backlog (visible and invisible)

MBS (MIMAS) / MIS533 / Database development Your own examples

MBS (MIMAS) / MIS533 / Database development What is Systems development Systems development refers to all activities that go into producing an IS solution : –Systems Analysis –Modeling –Design –Implementation –Testing –Maintenance

MBS (MIMAS) / MIS533 / Database development What is so difficult about Analysis and Design? It involves listening, understanding, documenting and clarifying It takes time, patience and humility It works best within a framework (methodology) Design always influenced by experience

MBS (MIMAS) / MIS533 / Database development Bad systems design SNCF : ticketing system Bank of Ireland on-line (what direct debits are on my account?) ERP systems: getting reports out Your own examples?

MBS (MIMAS) / MIS533 / Database development Understanding requirements... Analysing problems –Functional decomposition –Process specification –Flow Charts –Use case –Activity diagrams Designing solutions –Data flow diagrams –Entity relationship model

MBS (MIMAS) / MIS533 / Database development Building a model Functional decomposition Data Flow Diagram –Context diagram –Processes –Data Flow –Data store –External entities

MBS (MIMAS) / MIS533 / Database development Example :

MBS (MIMAS) / MIS533 / Database development Functional decomposition

MBS (MIMAS) / MIS533 / Database development Context diagram On-line reservation system Internet Users Global Airline seat booking

MBS (MIMAS) / MIS533 / Database development Example : Input : –Flight details (eg. SNN-BVA, 8 Oct, 10.35) –Credit card details (eg. VISA no, Expiry date) Process : –Confirms price (eg. EUR 79) –Makes reservation & processes payment Output : –Reservation reference (eg.CGHKCA)

MBS (MIMAS) / MIS533 / Database development Data Flow Diagram Flight details Lists options Confirm price Book now Outward Inward Makes Reservation & payment Credit card Reservation Stores Flight details