Business Intelligence - 1 BUS 782

Topics Scenario Management Chart Online Analytical Process, OLAP – Excel’s Pivot table/Pivot chart Import/Export Data

Scenario A scenario is an assumption about input variables. Excel’s Scenarios is a what-if-analysis tool. A scenario is a set of values that Microsoft Excel saves and can substitute automatically in your worksheet. You can use scenarios to forecast the outcome of a worksheet model. You can create and save different groups of values on a worksheet and then switch to any of these new scenarios to view different results. Data/What If analysis/Scenario

Creating a Scenario – Add scenario Changing cells – Scenario Summary Resulting cells Demo: benefit.xls

Charts

Charting Decision Rules An Internet Service Provider charges customers based on hours used: – First 10 hours$15 – Each of the next 20 hours$2 per hour – Hours over 30 hours$1 per hour

Comparing Decision Rules Plan 2: – First 20 hours: $20 – Hours over 20$1.5 Plan 3: – $35 unlimited access.

Charting Functions Demand function: – P = 150 – 6*Q ^2 Supply function: – P = 10* Q ^2 + 2*Q Note: – Positive area – Value axis maximum/minimum value: Format Value Axis

Chart Stock Market Data Download Dow Jones Historical Data – Yahoo/Finance/Dow/Historical Prices – Enter criteria – Copy/Paste to Excel To chart: – Insert/Chart/Other Charts/Stock chart

On-Line Analytical Processing (OLAP) Tools The use of a set of graphical tools that provides users with multidimensional views of their data and allows them to analyze the data using simple windowing techniques OLAP Operations – Cube slicing–come up with 2-D view of data – Drill-down–going from summary to more detailed views – Roll-up – the opposite direction of drill-down – Reaggregation – rearrange the order of dimensions

Slicing a data cube

Example of drill-down Summary report Drill-down with color added Starting with summary data, users can obtain details for particular cells

Excel’s Pivot Table Insert/Pivot Table or Pivot Chart – Drill down, rollup and reaggregation – Filter Pivot Chart – Filter – Drilldown, rollup, reaggregation Import queries from Access to perform analysis. – Sales related to: Customer’s location, Rating and Products

Access Tools for Import/Export External Data – Import – Export Exchange data between: – Other Access databases – Excel – Text file – XML – ODBC data sources

Data Exchange with Excel Import from Excel: – The first row of Excel’s list should contain field names Or define a name for the list range. – External Data/Import/Excel Export to Excel: – External Data/Export/Excel Note: Saved imports/exports

Open Database Connectivity (ODBC) Provide a standard to retrieve data from a database. It manages one or more "database drivers“ that enables the communication between database and applications. To access a database, we use ODBC facilities to define a ODBC data source name for the database.

ODBC Demo: Connecting to SQL Server Define an ODBC data source name: – Control Panel/Administrative tools/Data source(ODBC) – Note: ODBC32 Import from an ODBC data source – External Data/Import/ODBC data source

Export/Import XML File Export: – External Data/More/XML – XML Data file – XML schema file Import: – External Data/Import XML

Excel’s Tools for Import/Export Data/Get External Data – From Access – From Web – From Other Sources ODBC XML – Existing Connections Saved Queries Save Query Refresh: Data/Refresh All – Compare the difference between Copy/Paste and Import