OpenEdge Data Management: DataServer for Microsoft SQL Server

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Chapter 7: The DataServer Tutorial Note: Consider whether you will choose to perform a schema pull that consists only of wild cards. Doing so might degrade your database’s performance as the activity will include system catalog files that are not typically included in a user database. Check Default to OpenEdge DATETIME to automatically map MS SQL Server data types to the associated OpenEdge data type. If you have modified your client application to handle LOB data types, check Default to OpenEdge LOB to map the OpenEdge LOB data type to MS SQL Server equivalent of BLOB, or CLOB data types. For more information on mapping OpenEdge and MS SQL Server data types, see the “Support for OpenEdge ABL BLOB data type” section on page 87 and the “Support for OpenEdge ABL CLOB data type” section on page 86. 3. Choose OK. A dialog box like the following example lists the objects and table information that you have preselected: 4. Select the objects that you want to update, then choose OK. When the update completes, you return to the Data Administration main window. When the update completes, you are reminded to check the ds_upd.e file. This file contains information about the tables that did not support record IDs as well as other warnings. When you update a definition, OpenEdge overwrites the old definition with the new one based on the current data source object. It also preserves the OpenEdge-specific table information. As a result, if you want to add a new column to a table in your data source and then update the definition, you do not have to re-enter all of the OpenEdge-specific information for the previously existing columns (fields) in the definition. Note: When you update a table in the schema holder with the Update/Add Table Definitions utility, the information for the user-defined ROWID is lost. You must reselect an index to support the ROWID. 270 OpenEdge Data Management: DataServer for Microsoft SQL Server
Verifying a schema holder Verifying a schema holder The Verify Table Definition utility allows you to verify that the schema holder for your data source matches the data definitions in the data source. For example, if you delete the customer table from the data source but not from the schema holder, this utility reports that the schema holder contains an orphaned object. You can verify the schema information in a single table or from multiple tables, and then choose to update the tables so that the schema information matches the data source definitions. The Verify Table Definition utility reads the definitions in the data source and compares them to the information in the schema holder. It reports the differences that it finds and their degree of severity. These are the categories of differences and how they impact your database applications: • Minor — These differences have no impact on the usability of your application. • Retained — These differences cannot be corrected by the Update/Add utility, hence the term “retained.” You must determine how severely they impact your application and change the data definitions either in the schema holder using the Data Dictionary or in the data source. • Severe — These differences might cause your application to malfunction. When the Verify utility detects severe differences, it automatically updates the schema holder to solve the discrepancies by adjusting the schema-image information in the schema holder to match the data source definitions. Severe differences in definitions that the DataServer uses internally also cause the schema holder to be updated. Table 48 lists the differences that the Verify Table Definition utility detects. Table 48: Verify utility report (1 of 2) Database object Difference Category Table Description Retained Table Foreign type Severe Table Name in OpenEdge Retained Table ROWID index Retained Index Active Minor Index Description Retained Index Name in OpenEdge Retained Index Unique Retained 1 Index field Abbreviated Minor Index field Ascending Severe Index field Order Severe Field Case sensitivity Retained OpenEdge Data Management: DataServer for Microsoft SQL Server 271
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® ® PROGRESS® OPENEDGE® OpenEdg
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Contents Preface . . . . . . . . .
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Contents Data output and retrieval
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Contents Migrating an OpenEdge data
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Tables Contents Table 1: DataServer
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Examples Contents Example 1: Passin
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Preface This Preface contains the f
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Chapter 5, “Configuring the DataS
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Before you begin Preface Before att
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In this example, STREAM stream, UNL
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After displaying a message, OpenEdg
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Preface Software Foundation (http:/
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Preface use, copy, modify, and dist
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Preface DISCLAIMS ALL WARRANTIES WI
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Preface INCLUDING ALL IMPLIED WARRA
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Preface WARRANTIES OF MERCHANTABILI
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Preface conditions for packages lik
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Introduction OpenEdge Data Manageme
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DataServer components DataServer co
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DataServer for MS SQL Server logic
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Figure 3 illustrates the schema-loa
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DataServer utilities DataServer uti
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DataServer configurations DataServe
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The remote DataServer configuration
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DataServer configurations Configuri
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Software requirements Software requ
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Guidelines for using the DataServer
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Initial Programming Considerations
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Database design issues Database des
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MS SQL Server DataServer data sourc
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Client code page Database design is
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Support for Unicode Database design
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Indexes and sorting Database design
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Database design issues source’s c
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Triggers Database design issues Tri
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Data types Data types MS SQL Server
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Table 9: MS SQL Server data type eq
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Processing activities that require
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Table 11: MS SQL Server 2008 dateti
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Performing data type conversions Da
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Enabling Datetime data types using
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2008, or if you use a native driver
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Default and Special Datetime Defaul
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ABL-to-MS SQL Server data type mapp
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Unknown value (?) Data types The Da
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Record creation Suppose that you ha
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Data source record locking Data sou
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Handling lock timeouts Data source
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Locking impact on queries Data sour
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Data source record locking When thi
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To avoid this type of problem, the
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Error handling If you use NO-ERROR
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Cursors Cursors A cursor is like a
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Cursors your specifications. Adjust
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• Block cursors are directly link
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FIND customer WHERE ROWID(customer)
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For example, the following statemen
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find.p /* This code accesses an Ope
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ABL issues Table 19 summarizes ABL
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RDBMS Stored Procedure Details Open
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RDBMS stored procedure basics RDBMS
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RDBMS stored procedure basics When
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Run Stored-Procedure details •
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Run Stored-Procedure details An exp
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Run Stored-Proc statement execution
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Run Stored-Procedure details Also n
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Loading results into a temp-table T
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Retrieving return codes Interfacing
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Interfacing with RDBMS stored proce
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Loading result sets into temp-table
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Employing additional enhancements I
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Handling errors Handling errors The
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ROWID Support This section presents
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ROWID Support The RUN STORED-PROC c
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ROWID Support If the table uses com
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Additional Features to Enhance Data
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Connection pooling Connection pooli
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DataServer connection management Co
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Firehose exclusions Connection pool
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Cursor downgrades Connection poolin
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Query tuning Query tuning How you s
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LOOKAHEAD NO-LOOKAHEAD SEPARATE-CON
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Query tuning Table 24: Query-tuning
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Join by SQLDB Join by SQLDB For que
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Table 25 describes how these contro
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Modifying the run-time schema check
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Configuring the DataServer Configur
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DataServer components Table 26: Ins
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Configuring a local DataServer Conf
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Configuring a remote DataServer 4.
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5162 Configuring a remote DataServe
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The ubroker.properties file Configu
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Configuring a remote DataServer Tab
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Configuring a remote DataServer The
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Creating a schema holder Creating a
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Creating a schema holder configurat
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Creating a schema holder 3. In the
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Creating a schema holder 10. Choose
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Typical configuration for a remote
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Typical configuration for a remote
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Connecting the DataServer You can s
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Starting a remote DataServer Starti
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Starting a remote DataServer If you
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Starting a remote DataServer Starti
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Connection guidelines Connection gu
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Page 229 and 230: qt_separate_connection qt_no_separa
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Page 233 and 234: Connecting a schema holder 1. Each
Page 235 and 236: Table 38 lists the DataServer log e
Page 237 and 238: Logging levels You can choose one o
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Page 241 and 242: Connecting a schema holder Example
Page 243 and 244: Connection failures and OpenEdge re
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Page 247 and 248: Using the $UNIQUE_DSLOG environment
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Page 259 and 260: DataServer utilities When you acces
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Page 265 and 266: Creating a schema holder • Choose
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Page 269: Updating a schema holder Updating a
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Page 275 and 276: Changing connection information in
Page 277 and 278: Deleting a schema holder Deleting a
Page 279 and 280: Managing server attributes See the
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Page 287 and 288: Defining a default constraint defin
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Page 293 and 294: Migrating an OpenEdge database to M
Page 303 and 304: Delta df to MS SQL Server Increment
Page 309 and 310: Modifying field-level information Y
Page 311 and 312: Defining the ROWID Modifying a sche
Page 313 and 314: Adding extended ABL support Adding
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Page 319 and 320: Troubleshooting This chapter descri
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ODBC options ODBC options The DataS
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ODBC options Table 56: DataServer o
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Using MS SQL Server and DataServer
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Large rows—the PRGRS_MINBUF optio
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ODBC options Wait time for asynchro
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Using the block cursor switches ODB
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Migration Issues This appendix disc
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Modifying your application Note the
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Sample code for the db.owner.Custom
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Server Related Command Line Utiliti
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OpenEdge Management or OpenEdge Exp
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Syntax Parameters service-name PROB
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Other command line utilities for th
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Data Type Details C This appendix s
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nvarchar 8 SQL_NVARCHAR CHARACTER t
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Using qt_debug to Analyze Performan
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Using qt_debug to analyze performan
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Index Numbers 4GLTrans log entry ty
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display format 309 overflow checkin
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INPUT-OUTPUT option retrieving para
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DataServer (-Dsrv) startup paramete
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221, 242, 359 Schema defined 40 loa
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OpenEdge Data Management: DataServer for Microsoft SQL Server

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