NET and DB2 united with IBM DB2 .NET Data Provider

ABIS Training & 1

.NET aDB2 .N Consulting

nd DB2 united with IBM ET Data Provider

Objectives :

.NET

ADO.NET

DB2 and ADO.NET

DB2 - ADO.NET applications

1. The .NET Framework2. ADO.NET3. DB2 & ADO.NET4. DB2 ADO.NET Applications

.N ABIS 2

TRAINING & CONSULTING

DEMO

ET and DB2 united with IBM DB2 .NET Data Provider

Win Forms client application queries DB2

according to a parameterized query

Result is displayed and changed by user

Changes are executed in DB2 database


.N ABIS 3


The .NET Framework 1

Common Language Runtime 1.1

Common Language Runtime (CLR) + Class Library

rvET and DB2 united with IBM DB2 .NET Data Provider

C#

IL

Common LanguageRuntime

Windows

runs on / interpretes to

VB

IL

C++

IL

is compiled to

runs in

C++

exeIE IIS SQL S


.N ABIS 4


The .NET Framework: CLR

1. Compilation and Execution Model

source code: VB, C#, C++, COBOL, ...

result of compilation:

source

age

present

ad

rrect ET and DB2 united with IBM DB2 .NET Data Provider

binary files containing an intermediate representation of the constructs

combination of metadata and Microsoft Intermediate Langu(MSIL)

In order for these binaries to be executed, the CLR must be on the target machine

execution:

when these binaries are executed they cause the CLR to lo

the CLR then takes over and manages the execution

JIT compilation (converting the MSIL as needed into the costream of instructions for the underlying processor)


.N ABIS 5


The .NET Framework: CLR

2. The Common Type System (CTS)

The CTS defines the rules by which all types are declared, defined and managed, regardless of source language.

The CTS is designed to be rich and flexible enough to support a

3

ng lan-ET and DB2 united with IBM DB2 .NET Data Provider

wide variety of source languages

. The Common Language Specification (CLS)

interacting with code that is written in a different programmiguage


.N ABIS 6


The .NET Framework: Class Library

The Framework Class Library 1.2

Any programming language (conform to CLS) can use classes

C r:

con-

for the


lass Library includes more than 3500 classes with support fo

interaction with databases

manipulating tabular and tree-structured data

consuming and producing XML

core functionality, such as interacting with base data types;sole, network and file I/O, exceptions

web-based (thin client) applications

desktop-based (thick client) applications with broad support Windows GUI.

SOAP-based XML web services.


.N ABIS 7



1. Namespace: a logical design-time naming convenience

ogram

me-

me can spaces

...using System.Windows.Forms;ET and DB2 united with IBM DB2 .NET Data Provider

class library is comprised of namespaces

each namespace contains types that you can use in your pr

using keyword (C#): to avoid fully qualified names ( naspace .typename )

Namespaces provide scope: Two classes with the same nabe used in your program as long as they are in different nameand as long as you qualify the names to the namespaces

namespace WindowsApplication1{

public class Form1 : System.Windows.Forms.Form{

private TextBox textBox1;private System.Windows.Forms.Button button1;...


.N ABIS 8



2. Managed DLLs (=Assemblies)

the class library is contained in multiple DLLs or assemblies

types in namespaces reside in a managed DLL

at con-ET and DB2 united with IBM DB2 .NET Data Provider

namespaces organize the objects defined in an assembly

every type is loaded in the context of an assembly

if a certain type is needed ---> add a reference to the DLL thtains that type


.N ABIS 9


ADO.NET 2

Data Providers 2.1

ADO.NET includes classes to access and work with data


classes can be data source independent

ex. DataSet is part of System.Data namespace is found in System.Data.dll

classes can be data source dependent

key objects: Connection

Command DataReader DataAdapter

---> provided by a .NET Data Provider

---> part of another namespace, other dll needed


.N ABIS 10


ADO.NET: Data Providers

ADO.NET ships with a

- OLE DB .NET Data Provider

= provider for OLE DB data sources

erver

D

n


calls through the OLE DB layer

- SQL Server .NET Data Provider

communicates with native data transfer protocol of SQL S

ownloadable from Microsoft: ODBC.NET Data Provider,...

ative data providers replace the need of a OLE DB driver

You can write your own Data Provider for any source ...


.N ABIS 11


ADO.NET: Data Providers

ADO.NET and the DB2 .NET Data ProviderET and DB2 united with IBM DB2 .NET Data Provider

Dataset

OLEDB .NETDATAPROVIDER

DB2 .NETDATAPROVIDER

OLEDB PROVIDER

ADO.NET

DB2

OLEDBConnection DB2Connection

otherDB

OLEDBDataAdapter DB2DataAdapter


.N ABIS 12


ADO.NET: Architecture

Architecture 2.2

no continuously live connections

tight integration with XML

m a da-

ns


DataSet: in-memory disconnected cache of data retrieved frotasource

==> new application architecture: loosely coupled applicatio

data commands for direct database access

transactions


.N ABIS 13


ADO.NET: ArchitectureET and DB2 united with IBM DB2 .NET Data Provider


.N ABIS 14


ADO.NET: DataSet

DataSet 2.3

a cache of records retrieved from a datasource

independent of datasource

en the tables


a relational view of data that can be represented in XML

access and manipulate the data two ways:

- as tables in a relational database one table or more tables, inclusive relationships betwe constraints (unique constraints, FK constraints)

- as XML data is transferred and persisted as XML

DataSet is defined with XML schema (typed DataSet)

no current record, all records are available

changes to DataSet can be written back to data source

diffgram


.N ABIS 15


DB2 & ADO.NET 3

IBM DB2.NET enablement 3.1

DB2 development add-ins for Visual studio

data providerET and DB2 united with IBM DB2 .NET Data Provider


.N ABIS 16


DB2 & ADO.NET: IBM data provider

DB2 .NET data provider 3.2

.NET applications can access

and Ver-

r

n

S


- DB2 Universal Database for LUW Version 8

- DB2 Universal Database for OS/390 and z/OS Version 6sion 7 via DB2 Connect

eference to assembly: IBM.Data.DB2.dll

amespace: IBM.Data.DB2

ome important classes:

DB2DataAdapter DB2Command DB2Connection DB2DataReader...


.N ABIS 17


DB2 & ADO.NET: Visual studio add-ins

Visual studio add-ins 3.3ET and DB2 united with IBM DB2 .NET Data Provider


.N ABIS 18


DB2 & ADO.NET: Visual studio add-ins

- IBM Explorer

- DB2 Tools toolbar

- DB2 Database Project

rop

r

r

V t V8.1.2

.NET and DB2 united with IBM DB2 .NET Data Provider

- DB2 SQL Editor

- Integrated help

- Adapted Toolbox

- IBM DB2 output message pane

- DB2 Data Adapter Configuration Wizard

- generate DB2 ADO.NET data components by drag and d

- browse metadata of DB2 objects in VS properties browse

equirements:

isual Studio .NET 2002 + DB2 Application Development clien

ET 2003 ----> DB2: service pack 3 or higher


.N ABIS 19


DB2 ADO.NET Applications 4

Where is my cursor? 4.1

there are no updateable server-side cursors

rsorET and DB2 united with IBM DB2 .NET Data Provider

- DB2DataReader: forward-only, read-only, server side cu

- DataSet: disconnected client cursor + DB2DataAdapter


.N ABIS 20


DB2 ADO.NET Applications: DataSet and DB2DataAdapter

Working with a DataSet and DB2DataAdapter 4.2

DB2DataAdapter:

table.

a data-

objects ET and DB2 united with IBM DB2 .NET Data Provider

- is used to exchange data between a DataSet and a DB2

- represents a set of data commands and a connection to base

- DataSet / DB2DataAdapters: one to many. Each DataAdapter can be used for one or more DataTable


.N ABIS 21



Fill method:

- loads data into the DataSet by executing a DB2SelectCommand

ctionString

)

Connection

AppET and DB2 united with IBM DB2 .NET Data Provider

EnforceConstraints

Clear()AcceptChanges()ReadXML()WriteXML()

DB2DataSet1

DeleteCommandUpdateCommandSelectCommandInsertCommand

Fill(DataSet)Update(DataSet)

DB2DataAdapter

CommandTextConnection

ExecuteNonQuery()ExecuteReader() :DataReader

DB2Command

Conne

Open()Close(

DB2

DataReader


.N ABIS 22



private IBM.Data.DB2.DB2Command db2SelectCommand1;private IBM.Data.DB2.DB2DataAdapter db2DataAdapter1;private WindowsApplication2.DB2DataSet1 db2DataSet11;private IBM.Data.DB2.DB2Connection db2Connection1;

...ET and DB2 united with IBM DB2 .NET Data Provider

...this.db2SelectCommand1 = new IBM.Data.DB2.DB2Command();this.db2Connection1 = new IBM.Data.DB2.DB2Connection();this.db2DataAdapter1 = new IBM.Data.DB2.DB2DataAdapter();this.db2DataSet11 = new WindowsApplication2.DB2DataSet1();this.button1.Click += new System.EventHandler(this.button1_Click);

this.db2DataAdapter1.SelectCommand = this.db2SelectCommand1;this.db2SelectCommand1.CommandText = "SELECT \"CONO\", \"CONAME\",FROM \"DB2ADMIN\".\"TUTCOMPANIES\" this.db2SelectCommand1.Connection = this.db2Connection1;

private void button1_Click(object sender, System.EventArgs e){

db2DataAdapter1.Fill(db2DataSet11);}


.N ABIS 23



Update method:

sends changes back to the database by executing DB2InsertCommand, DB2UpdateCommand and DB2deleteCommandET and DB2 united with IBM DB2 .NET Data Provider

...this.db2DataAdapter1.UpdateCommand = this.db2UpdateCommand1;this.db2DataAdapter1.InsertCommand = this.db2InsertCommand1;this.db2DataAdapter1.DeleteCommand = this.db2DeleteCommand1;this.db2UpdateCommand1.CommandText = ... this.db2InsertCommand1.CommandText = ... this.db2DeleteCommand1.CommandText = ... this.db2UpdateCommand1.Connection = this.db2Connection1;this.db2InsertCommand1.Connection = this.db2Connection1;this.db2DeleteCommand1.Connection = this.db2Connection1;private void button1_Click(object sender, System.EventArgs e)

{db2DataAdapter1.Update(db2DataSet11);

}


.N ABIS 24



Remarks:

- updates to the datasource are performed in a certain order updates and inserts of PK

t

e


updating child - parent tables autoincrement columns

exceptions

- 1 sql-statement = 1 transaction stops executing when error is encountered constraint, null, datatype exceptions solved in DataSe

but DataSet contains only part of table

- meanwhile an update can be performed at the datasourc optimistic concurrency


.N ABIS 25


DB2 ADO.NET Applications: DataSet and transactions

DataSets and transactions 4.3

1. Working with transactions

- You must explicitly open en close the connectionET and DB2 united with IBM DB2 .NET Data Provider

ConnectionString

Open()Close()BeginTransaction() :Transaction

DB2Connection

ConnectionIsolationLevel

Commit()Rollback()

DB2Transaction

CommandTextConnectionTransaction

ExecuteNonQuery()

DB2Command

App

*

*


.N ABIS 26



private IBM.Data.DB2.DB2Transaction db2Transaction1;...private void button2_Click(object sender, System.EventArgs e)

{ tryET and DB2 united with IBM DB2 .NET Data Provider

{ db2Connection1.Open();db2Transaction1 = db2Connection1.BeginTransaction();db2UpdateCommand1.Transaction = db2Transaction1;db2InsertCommand1.Transaction = db2Transaction1;db2DeleteCommand1.Transaction = db2Transaction1;db2DataAdapter1.Update(db2DataSet11);db2Transaction1.Commit();db2Connection1.Close();

}catch (IBM.Data.DB2.DB2Exception exep){ MessageBox.Show(exep.Message, exep.GetType().ToString());

db2Transaction1.Rollback();db2DataAdapter1.Fill(db2DataSet11);db2Connection1.Close();

}}


.N ABIS 27



2. Working without transactions

idea: skip update that generates the error

ated);

));ET and DB2 united with IBM DB2 .NET Data Provider

notify user continue with next rows

this.db2DataAdapter1. ContinueUpdateOnError = true;this. db2DataAdapter1.RowUpdated += new IBM.Data.DB2.DB2RowUpdatedEventHandler(this.db2DataAdapter1_RowUpdprivate void db2DataAdapter1_RowUpdated(object sender, IBM.Data.DB2.DB2RowUpdatedEventArgs e)

{//if (e.Status == UpdateStatus.ErrorsOccurred) if (e.RecordsAffected == 0){

e.Row.RowError = "Fout";MessageBox.Show("in RowUpdatedevent : " + e.Errors.ToString(

}}


.N ABIS 28



this.db2DataAdapter1.RowUpdated += new IBM.Data.DB2.DB2RowUpdatedEventHandler(this.db2DataAdapter1_RowUpdated);private void db2DataAdapter1_RowUpdated(object sender, IBM.Data.DB2.DB2RowUpdatedEventArgs e)

));ET and DB2 united with IBM DB2 .NET Data Provider

{if (e.RecordsAffected == 0){

e.Row.RowError = "Fout";e.Status = UpdateStatus. SkipCurrentRowMessageBox.Show("in RowUpdatedevent : " + e.Errors.ToString(

}}


.N ABIS 29



3. Isolation levels:

R

T

it taSet it-s

.NET DB2ReadCommitted Cursor Stability (default)

mitted);ET and DB2 united with IBM DB2 .NET Data Provider

emark:

he DataSet has its own API, for example:

s possible to execute updates,...,commit changes on the Daelf

ReadUncommitted Uncommitted ReadRepeatableRead Read StabilitySerializable Repeatable Read

db2Transaction1 = db2Connection1.BeginTransaction(Isolationlevel.ReadCom


.N ABIS 30


DB2 ADO.NET Applications: Optimistic Concurrency

Optimistic Concurrency 4.4

Generated update statement:

tw

D

update

o

NULL)AND

NULL) AND" IS NULL) ...ET and DB2 united with IBM DB2 .NET Data Provider

o techniques:

BConcurrencyException:

The exception that is thrown by the DataAdapter during the operation if the number of rows affected equals zero.

r Rowupdated event

UPDATE "DB2ADMIN"."TUTCOMPANIES" SET "CONO" = ?, "CONAME" = ?, "COSTREET" = ?, "COSTRNO" = ?, ...WHERE ("CONO" = ?) AND ("CONAME" = ? OR CAST(? as CHARACTER(45)) IS NULL AND "CONAME" IS("COSTREET" = ?) AND("COSTRNO" = ? OR CAST(? as VARCHAR(10)) IS NULL AND "COSTRNO" IS("COTOWN" = ? OR CAST(? as CHARACTER(45)) IS NULL AND "COTOWN


.N ABIS 31


DB2 ADO.NET Applications: Optimistic Concurrency

private void button2_Click(object sender, System.EventArgs e){

try{


db2DataAdapter1.Update(db2DataSet11);}catch ( DBConcurrencyException exep){

MessageBox.Show("foutDBconcurrencyException");}

}


.N ABIS 32


DB2 ADO.NET Applications: DB2CommandBuilder

DB2CommandBuilder 4.5

Automatically generates single-table commands

u f meta-d

T dTime-o and


ses the SelectCommand property to retrieve a required set oata

he DB2CommandBuilder also uses the Connection, Commanut, and Transaction properties referenced by the SelectComm

private IBM.Data.DB2.DB2CommandBuilder db2CommandBuilder1;...this.db2DataAdapter1.SelectCommand = this.db2SelectCommand1;this.db2CommandBuilder1 = new IBM.Data.DB2.DB2CommandBuilder();this.db2CommandBuilder1.DataAdapter = this.db2DataAdapter1;


.N ABIS 33


DB2 ADO.NET Applications: DB2CommandBuilder

Trace output:

- dynamic prepare select command

- call SYSIBM.SQLPRIMARYKEYS

NULL)AND

NULL) AND" IS NULL) ...ET and DB2 united with IBM DB2 .NET Data Provider

- generated update statement

UPDATE "DB2ADMIN"."TUTCOMPANIES" SET "CONAME" = ?WHERE ("CONO" = ?) AND ("CONAME" = ? OR CAST(? as CHARACTER(45)) IS NULL AND "CONAME" IS("COSTREET" = ?) AND("COSTRNO" = ? OR CAST(? as VARCHAR(10)) IS NULL AND "COSTRNO" IS("COTOWN" = ? OR CAST(? as CHARACTER(45)) IS NULL AND "COTOWN


.N ABIS 34


[email protected] and DB2 united with IBM DB2 .NET Data Provider

.NET and DB2 united with IBM DB2 .NET Data ProviderThe .NET Framework 1Common Language Runtime 1.1The Framework Class Library 1.2

ADO.NET 2Data Providers 2.1Architecture 2.2DataSet 2.3

DB2 & ADO.NET 3IBM DB2.NET enablement 3.1DB2 .NET data provider 3.2Visual studio add-ins 3.3

DB2 ADO.NET Applications 4Where is my cursor? 4.1Working with a DataSet and DB2DataAdapter 4.2DataSets and transactions 4.3Optimistic Concurrency 4.4DB2CommandBuilder 4.5

NET and DB2 united with IBM DB2 .NET Data Provider

Text of NET and DB2 united with IBM DB2 .NET Data Provider

Information Management System z - IBM Management System z 2008 ... DB2 9 for zOS and DB2 tools Seminar ... DB2 Optimization Expert, DB2 Optim solution, IBM Dataquant,

Net Search Extender Administration and User's Guidepublic.dhe.ibm.com/ps/products/db2/info/vr101/pdf/... · IBM DB2 10.1 for Linux,UNIX,andWindows Net Search ExtenderAdministration

DB2 UDB for iSeries .NET Provider - IBM

Microsoft SQL Server versus IBM DB2 Comparison Document ... · PDF file20.10.2008 · Microsoft SQL Server versus IBM DB2 Comparison Document ... versus IBM DB2 Comparison Document

DBMoto for IBM Informix - DSCallards · IBM DB2 for i and AS400 V4R3 and later IBM DB2 for z/OS (OS/390) v5 and later IBM DB2 for Windows v5 and later IBM DB2 for AIX, Linux, HP/UX,

Ibm db2 case study

NET and DB2 united with IBM DB2 .NET Data Provider · PDF filewhen these binaries are executed they cause the CLR to load ... - DB2 Universal Database for OS/390 and z/OS Version 6

IBM GLOBAL SERVICES IBM DB2 Information Management

IBM Solutions Connect 2013 - IBM DB2 BLU

DB2 IBM Informix - Oninit

IBM DB2 Utility Update - Best Practices - DFW DB2 Forum

ibm db2 training | ibm db2 training online | db2 training | db2 course

IBM DB2 utilities and tools

IBM DB2 Web Query for IBM i

IBM DB2 Universal Database

Inside IBM DB2 Alphablox: An in-depth technical view of IBM DB2 Alphabloxdownload.101com.com/pub/TDWI/Files/Inside IBM DB2... · 2005-09-13 · Inside IBM DB2 Alphablox: An in-depth

IBM DB2 9.7 Data Concurrencymyy.haaga-helia.fi/~dbms/db2/01_Classroom/1.5... · IBM DB2 ® 9.7 Data Concurrency ... • DB2 Academic Workshop VMware ... query again by pressing the

IBM DB2 10

IBM i: DB2 for i SQL ReferenceAbout DB2 for i SQL Reference IBM i: DB2 for i SQL Refer ence

DB2 Tools Update 2008 - IBM Optim IBM Datamirror DB2 Performance Toolkit the SAP Edition Tivoli OMEGAMON XE for DB2 ... DB2 zOS and DB2 Tools support Support V7 still supported V8

DB2 Universal Database - Ibm

IBM DB2 Performance Solutions - NEDB2UG - IBM... · IBM DB2 Performance Solutions HENNIE MYNHARDT [email protected] Henry Yim [email protected] ... Tivoli Omegamon XE for DB2

Managing IBM DB2 10 for z/OS Using the IBM DB2 ... · International Technical Support Organization Managing IBM DB2 10 for z/OS Using the IBM DB2 Administration Tool for z/OS Version

Developing DB2 CLR Procedures in VS° IBM DB2 V8.1 Server ° IBM DB2 SAMPLE database ° Microsoft Windows 2000, 2003, or XP with the Microsoft .NET framework V1.1 ° Microsoft Visual

IBM DB2 UDB DBA V9.5

IBM Lotus Domino 7 Meets IBM DB2

IBM Db2 Update

Managing IBM Db2 Analytics Accelerator by using IBM … · Managing IBM Db2 Analytics Accelerator by ... Managing IBM Db2 Analytics Accelerator by using IBM Data Server ... IBM Data

Db2 update day 2015 managing db2 with ibm db2 tools svenn aage

DB2 IBM Informix - Oninit · DB2 ® IBM Informix IBM Informix ODBC Driver Programmer’s Manual Version 2.90 G251-2294-00

Documents

NET and DB2 united with IBM DB2 .NET Data Provider

Text of NET and DB2 united with IBM DB2 .NET Data Provider