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Putting VB & SQLTo Work
Stefano Grazioli
Critical Thinking Still going strong VPN, then “cmd”, thenrunas /user:mcintire\MyUserName "C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\devenv.exe"
Easy meter
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AccessingEnterprise Data
Using Excel & ADO
Where is my Data?
In a DBMS on the
network
In memoryDATASET
fast
Speed slow best fast Depends on bandwidth
Volume medium Small/medium medium Very large
Access easy easy difficult medium
Backup medium poor n/a excellent
Security poor Poor/medium excellent good
In a file
slow
Your local machine Server
slow
ADO.NET ActiveX Data Object MS Technology to manage
enterprise data Use ADO to run SQL queries on
remote servers, collect the results, and present them to the user.
Database Plumbing• Standard parts,
put together in standard ways are called architectures
• Standard parts are called ‘objects’
Software Objects
Software Objects An object is a bundle of data and ‘methods’ Object Classes and Object Instances
Class = code to build an instanceInstance = physical item running on your
machine Instances are built with the keyword new
Dim myDeskClock As DeskClock = new DeskClock()
Name, a variable Class name (type) keyword Method that creates the deskclock
ADO architecture
RemoteDataBase(financial
data)
Client (your program on your machine)
SQL Querystring
Connectionstring
SqlConnection
SqlAdapter
ListObject
DataSetDataTables
DataRows
DB Server
SqlCommand
On yourSpreadsheet
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DEMO
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In Technology?
You do the talking Name, Major Learning objectives Things you like about the class Things that can be improved Attitude towards the Tournament
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SUGGESTIONS
Make sure that you understand the ADO architecture diagram before coding.
