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Difference between revisions of "HowTo:Update Data via OLEDB with a Workflow"

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First you need to establish a OLEDB Connection t o a Oracle Database.
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Updating data in an Oracle database via a workflow can be done by using a set of activities.
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See [[HowTo:Connect_To_Oracle_With_A_Workflow]] for details.
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Once we are able to connect we start modelling the data structures we want to udpate in the workflow editor.
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1. Use a "CreateOLEOracleScope" Activity to configure the connection.
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2. Place either a "CreateOLETableScope" or a "CreateOLEQueryScope" inside the scope acticity to define the table you want to fetch data from.
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{{Attention|When you are using a CreateOLEQueryScope to fetch data you want to update, you '''have to''' define a valid tablename!}}
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3. Iterate throw the fetched rows by using e.g. a FOR - EACH activity.
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= Introduction =
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<br/><br/>
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# Establish a [[HowTo:Connect_To_Oracle_With_A_Workflow|OLEDB connection to an Oracle database]]. Once connected, it is necessary to model the table / column definitions, of the data to be udpated, in the workflow.
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4. Once you found the row you want to update, use an "OLEEditRow" to make it editable.
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# Use [[CreateOLEOracleScope (Activity)|CreateOLEOracleScope]] activity to set up the connection.
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<br/><br/>
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# Place either a [[CreateOLETableScope (Activity)]] or a [[CreateOLEQueryScope (Activity)]] within the scope acticity to define the table you want to udate data.
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5. Define the primary key data structure by placing "EditOLEValue" activities inside the OLEEditRow. You need to specify the column name in the "DisplayName" property and the data type in the "DataType" property. Check the "IsPrimary" checkbox as this column is the key column.
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{{Attention|If you are using a CreateOLEQueryScope to fetch data you want to update, you '''have to''' define a valid tablename!}}
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# Iterate throw the fetched rows by using e.g. a '''for each''' activity.
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# Once you determine the row to be updated, use [[OLEEditRow (Activity)]] to start editing.
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# Define the primary key column(s) by using [[EditOLEValue (Activity)]] activities within OLEEditRow. You need to specify the column name in the '''DisplayName''' property and the data type in the '''DataType''' property. Check the '''IsPrimary''' checkbox for all columns defined in this step (key columns).
 
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{{Attention|The primary key column "must be defined" when updating data via OLE DB.}}
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{{Attention|The primary key column '''must be defined''' when updating data via OLE DB.}}
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# Define the data column(s) to be updated by using EditOLEValue activities within the OLEEditRow. Again, you need to specify the column name in the '''DisplayName''' property and the data type in the '''DataType''' property. Specify the '''new value''' for the cell in the property '''Value'''.
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6. Define the data cells you want to update by placing "EditOLEValue" activities inside the OLEEditRow. You need to specify the column name in the "DisplayName" property and the data type in the "DataType" property. Specify the new value for the cell in the evaluation property "Value".
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'''Example Workflows:'''
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=Examples=
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<br/><br/>
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Connecting to an Oracle database and updating data.
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Connecting to oracle DB and update data: [[File:Example_Workflow_ORACLE_UPDATE_STATEMENT.uwf|220px|border|alt=Example Workflow|Example Workflow]]
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[[File:Example_Workflow_ORACLE_UPDATE_STATEMENT.uwf|220px|border|alt=Example Workflow|Example Workflow]]
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<br/><br/>
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[[File:UI_Activity_UpdateViaOLEDB.PNG|440px|border|alt=Example Workflow|Example Workflow]]
 
[[File:UI_Activity_UpdateViaOLEDB.PNG|440px|border|alt=Example Workflow|Example Workflow]]
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[[Category:OLE]]
 
[[Category:OLE]]
 
[[Category:Workflow]]
 
[[Category:Workflow]]
 
[[Category:How-To]]
 
[[Category:How-To]]

Revision as of 09:53, 11 February 2015

Updating data in an Oracle database via a workflow can be done by using a set of activities.

[edit]

Introduction

  1. Establish a OLEDB connection to an Oracle database. Once connected, it is necessary to model the table / column definitions, of the data to be udpated, in the workflow.
  2. Use CreateOLEOracleScope activity to set up the connection.
  3. Place either a CreateOLETableScope (Activity) or a CreateOLEQueryScope (Activity) within the scope acticity to define the table you want to udate data.
IC Attention.pngIf you are using a CreateOLEQueryScope to fetch data you want to update, you have to define a valid tablename!
  1. Iterate throw the fetched rows by using e.g. a for each activity.
  2. Once you determine the row to be updated, use OLEEditRow (Activity) to start editing.
  3. Define the primary key column(s) by using EditOLEValue (Activity) activities within OLEEditRow. You need to specify the column name in the DisplayName property and the data type in the DataType property. Check the IsPrimary checkbox for all columns defined in this step (key columns).


IC Attention.pngThe primary key column must be defined when updating data via OLE DB.
  1. Define the data column(s) to be updated by using EditOLEValue activities within the OLEEditRow. Again, you need to specify the column name in the DisplayName property and the data type in the DataType property. Specify the new value for the cell in the property Value.

Examples

Connecting to an Oracle database and updating data. Example Workflow ORACLE UPDATE STATEMENT.uwf Example Workflow

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