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- Welcome to the Borland Database Engine
- --------------------------------------
-
- This README file contains installation instructions, information about
- how to contact Borland, and important last-minute information about the
- Borland Database Engine (BDE).
-
- The Borland Database Engine gives developers the opportunity to develop
- applications with the same database engine that is used in Paradox for
- Windows, dBASE for Windows, Delphi and ReportSmith.
-
-
- Contents
- --------
- I. Installation and Configuration
- II. Borland Database Engine Directories
- III. Overview of Components
- IV. Programming with the BDE
- V. Programming with the ODBC Socket
- VI. Using DLL Swap
- VII. Using the Database Desktop
- VIII. Accessing SQL Servers using Native Drivers
- IX. What's New for this Release
- X. Getting Help & Reporting Bugs
- XI. Product Information
-
-
- I. Installation and Configuration
- -----------------------------------
- System requirements:
-
- - DOS 3.1 or higher
- - Windows version 3.1
- - 6 MB RAM required, 8 MB recommended
- - 25 MB free disk space
-
- - Follow these steps to install the Borland Database Engine from
- CD-ROM:
- 1. Insert the CD-ROM in your CD-ROM drive. (The following
- instructions assume you are using drive E. Substitute your
- drive letter if necessary.)
- 2. Choose File|Run from the Program Manager. The Run dialog box appears.
- 3. Enter E:SETUP in the Command Line text box.
- 4. Follow the instructions on the screen.
-
- - Follow these steps to install the Borland Database Engine from
- diskettes:
- 1. Insert Diskette 1 in a floppy drive. (The following instructions
- assume you are using drive A. Substitute your drive letter
- if necessary.)
- 2. Choose File|Run from the Program Manager. The Run dialog box appears.
- 3. Enter A:SETUP in the Command Line text box.
- 4. Follow the instructions on the screen.
-
-
- II. Borland Database Engine Directories
- -----------------------------------------
- If you accepted BDE and IDAPI as the installation directories, the
- directory structure for the Borland Database Engine is as follows:
-
- IDAPI (IDAPI .DLLs and the configuration file IDAPI.CFG)
- |
- +--- LANGDRV
-
- BDE
- |
- +--- BIN
- |
- +--- DOC
- |
- +--- EXAMPLES
- | |
- | +--- C
- | | |
- | | +--- ADDRESS
- | | |
- | | +--- DBPING
- | | |
- | | +--- INVENTRY
- | |
- | +--- DELPHI
- | | |
- | | +--- FILTER
- | | |
- | | +--- TABLEENH
- | | |
- | | +--- VCL
- | |
- | +--- PASCAL
- | | |
- | | +--- EMPLOYEE
- | |
- | +--- PDOXWIN
- | | |
- | | +--- RESTRUCT
- | | |
- | | +--- SEEK
- | |
- | +--- QUERY
- | |
- | +--- SNIPIT
- | |
- | +--- TABLES
- |
- +--- INCLUDE
- |
- +--- LIB
- |
- +--- REDIST
- |
- +--- UNITS
-
- DBD
- |
- +---DBDPRIV
-
-
- III. Overview of Components
- -----------------------------
- Software components
-
- The BDE consists of the BDE API and drivers for Paradox, dBASE, ODBC
- Socket, and Text files. FILELIST.TXT lists the files that make up
- this release of the Borland Database Engine. After the BDE is
- installed, you should see icons for SnipIt Code Viewer, Query Manager,
- DBPing, the BDE on-line help system, various sample applications,
- the READSDK, the BDE Configuration Utility, the Database Desktop, and
- the DLL Swapper.
-
- Documentation Components
-
- Documentation for the Borland Database Engine consists of the Borland
- Database Engine on-line help, and various text files. The on-line
- help and the supporting text files can be found in the DOC directory.
-
-
-
- IV. Programming with the BDE
- -----------------------------
-
- - All developers using C, or C++, should use the provided IDAPI.LIB
- library when you link your application. IDAPI.LIB is more than just
- an import library. It has hooks to locate and load various DLLs.
-
-
- - We recommend that you use DbiQInstantiateAnswer() to save answer
- tables produced by query functions. This is more efficient than
- reading and writing one record at a time.
-
- - BDE searches for the configuration file in this order:
- 1. Uses the CFG specified in the DBIEnv structure
- 2. Checks for a defined CFG file in the WIN.INI file located in
- your Windows directory. The entry checked for is "[IDAPI]"
- with an sub-entry of "CONFIGFILE01."
- 3. Checks for the CFG file in the startup directory.
- 4. If the CFG file cannot be found, BDE initializes with a
- predefined set of configuration settings. The default
- settings include no locking of STANDARD database tables.
-
- - BDE\INCLUDE directory needs to be specified before the
- BORLANDC\INCLUDE directory when using BC 3.1.
-
- - If you are using Microsoft C and NMAKE.EXE, make sure that you have
- the INCLUDE and LIB environment variables set.
-
- - For ANSI drivers do not specify "iLen" when calling DbiNativeToAnsi().
- Simply translate the entire string.
-
- - You must set the "iLen" part of your field descriptors when calling
- DbiCreateInMemTable().
-
- - The Pascal unit files distributed with the BDE SDK (DBIPROCS.PAS,
- DBITYPES.PAS, and DBIERRORS.PAS) are NOT intended to be replacements
- for similarly named Delphi units. They are to be used with BDE-based
- Borland Pascal programs. The SDK units will have a slightly different
- interface section than those compiled and provided with Delphi. If
- you replace the Delphi units, you will not be able to link with other
- units that are dependent on the Delphi supplied ones.
-
- - If there is a new prototype that you wish to access from Delphi you
- need to either create a DBINEW unit or simply declare the prototypes
- in the .PAS file of your choice.
-
- - We strongly recommend that you use the debug layer during application
- development and testing. This is done by swapping the IDAPI01.DLL with
- the DBG.DLL and activating the debug layer with a call to
- DbiDebugLayerOptions(). Here are some other debug layer details.
- 1. The debug layer is "shared" among all BDE clients.
- 2. We strongly recommended that one BDE application be designated
- to activate and deactivate the debug layer.
- 3. All applications that use BDE will output trace information
- after the debug layer has been enabled.
- 4. See the reference material for DbiDebugLayerOptions() for more
- details.
-
- - Within the BDE Reference Help under "Data Structures"|"CANHdr" there is
- a "Operator identifying leaf operands" called canTUPLE. This is not a
- supported operator. In addition the "Arithmetic" and "Aggregate Type"
- operators listed are not supported.
-
- - Within the BDE Reference Help under "Data Structures"|"Data Type
- Translations" the data type "Money" is converted to Number (20, 4) for
- dBASE tables not Float (20, 4).
-
- - Older versions of the BDECFG.EXE (then called IDAPICFG.EXE) will
- cause a General Protection Fault if the LDPATH statement in the
- WIN.INI file points to a directory that contains new or current
- versions of the BDE files. Use the BDECFG.EXE to avoid this problem.
-
- - When using ODBC data sources with the auto odbc option set to true and
- a driver name greater than 32 characters, IDAPI truncates the name to
- 32 characters. These truncated drivers do not appear in the driver list
- within BDECFG.EXE. Therefore they cannot be deleted from the
- configuration file. Every time that the auto odbc option is set to
- true these drivers are added repeatedly to the configuration file after
- every save - thus the configuration file keeps growing and there is no
- way to remove the excess drivers. To avoid this problem do not use
- driver names greater than 32 characters in length.
-
-
- V. Programming with the ODBC Socket
- -------------------------------------
-
- - This release of the Borland Database Engine comes with an ODBC Socket.
- It has been certified with Microsoft's 2.0 ODBC Driver Manager.
- The files ODBC.DLL, ODBCINST.DLL and ODBCINST.HLP have been installed
- into your WINDOWS SYSTEM directory. Proper versioning procedures
- occur during the install, therefore if you had newer ODBC Driver
- Manager files already on your system, then they have not been
- replaced.
-
- NOTE: The ODBC 2.0 driver manager does work with ODBC 1.x ODBC drivers.
-
- - The driver description in the ODBC.INI must match the driver name
- exactly as found in ODBCINST.INI in order for the BDE Configuration
- Utility to add drivers to the BDE configuration file.
-
- - For information on how to create an ODBC driver connection and alias,
- search for "ODBC Driver Connection" in the BDE Configuration Utility
- on-line help.
-
- - When using passthrough SQL functions (DbiQExecDirect), case-sensitive
- object names should be enclosed by the DBMS-identifier quote
- character.
-
- - ODBC does not support owner-qualified indexes. When using
- DbiOpenTable, do not specify an owner name with the index parameter.
-
- - Physical data type identifiers are composed of a 16-bit number. The
- high-byte is the driver ID and the low-byte is the ODBC SQL type
- identifier. To determine the SQL type of a field, use the following
- algorithm:
-
- SWORD iSqlType;
-
- iSqlType = (SWORD)(signed char)(0x00FF & pFldDesc->iFldType)
-
- The cast to signed char is necessary to preserve the sign information.
-
- - Physical types are stored in the SQL_C_ types documented in
- Microsoft's Open Database Connectivity Software Development Kit,
- Version 2.0 Appendix D. The only exception is for SQL_VARBINARY
- types. The first byte specifies the number of bytes of information.
-
- - Updateable ODBC queries are not supported with aliases that have the
- SQLPASSTHRU MODE parameter set to NOT SHARED. The SQLPASSTHRU MODE is
- a parameter that can be set by the BDE Configuration Utility for each
- ODBC alias.
-
-
- Database-specific information
- -----------------------------
- - You may encounter problems when copying Oracle tables containing
- NUMERIC type columns to other Oracle tables. This is a known problem
- and is fixed in Intersolv ODBC 2.0 Oracle driver.
-
- - When specifying NetWare SQL BLOB\MEMO fields, it is necessary to
- specify an iUnits setting less than or equal to 32765. The default of
- 32767 that is assumed by the driver is incorrect due to field header
- information.
-
- - When using DbiBatchMove with ebatMode set to batCOPY, BLOB fields that
- require an iUnits specification default to the maximum allowable size
- supported. This can cause problems for NetWare SQL users because the
- BLOB on the target table is set to 32K, exceeding the record buffer
- limit.
-
- - DB2/2 (Database Manager) does not support concatenation operators in
- queries.
-
- - Depending on the SQL server being used, scrolling through a set of
- records based on a non-unique index does not always show a consistent
- ordering of NULL index values (i.e. sometimes they will be at BOF and
- sometimes at EOF). This is the behavior of the server and not IDAPI.
-
- - When using the Microsoft 1.0 ODBC Text driver within a BDE program
- opening a database results in the program's working directory being
- set to the directory where the Text file is located. This means that
- runtime functions (i.e. findfirst) are not using the Windows defined
- working directory but the directory containing the Text database.
-
-
- VI. Using DLL Swap
- --------------------
- It is possible for your DLLs to reach a state that the DLL Swapper will
- not be able to resolve. If you have IDAPI01.DLL, DBG.DLL, and NODBG.DLL
- on your disk at the same time, an error message will be displayed.
-
- To resolve the conflict, delete either DBG.DLL or NODBG.DLL. You should
- delete the .DLL that is the same size as the IDAPI01.DLL file.
-
-
- VII. Using the Database Desktop
- ---------------------------------
- The Database Desktop is a utility that allows you to create, modify,
- and restructure Paradox and dBASE tables. It uses BDE for all of
- its database I/O and requires the BDE configuration file for access
- to SQL databases. Refer to your Database Desktop on-line help for
- detailed product information.
-
-
- VIII. Accessing SQL Servers using Native Drivers
- ------------------------------------------------
- This release of the Borland Database Engine has been certified with
- the Borland SQL Links 2.5 product. Borland SQL Links 2.5 product
- offers high performance native drivers for InterBase, Oracle,
- Informix, and MS/SYBASE SQL Server.
-
- With Borland SQL Links 2.5 you can build applications and scale them
- between local and remote data. No other database engine provides this
- level of scalability! Developers use one API to access all drivers
- supported by BDE.
-
-
- IX. What's New for this Release
- -----------------------------------
-
- Local Features
-
- - You can now find the BDE documentation on-line (BDE.HLP & LOCALSQL.HLP)
-
- - Local SQL has been enhanced. For more information see the Local SQL
- on-line help file.
-
- - Local SQL now supports parameterized queries. See Local SQL on-line
- help under "Parameter Substitutions in DML Statements".
-
- - There are two new functions (DbiAddAlias and DbiDeleteAlias) that
- allow aliases to be added and deleted from the configuration file.
- For more information see the BDE on-line help file.
-
- - There is now schema support for ASCII tables. See the SNIPIT example
- (CR8TXTBL.C) for more details.
-
- - Support for accessing encrypted dBASE tables is now included. See the
- SNIPIT example (DBLOGIN.C) for more details.
-
- - When trying to open a dBASE table with an invalid index there is now
- the capability to recieve a callback and determine whether or not to
- continue opening the table. See the SNIPIT example (INPUTREQ.C) for
- more details.
-
-
- New Applications
-
- - The Database Desktop has been upgraded (version 5.1) to allow
- access to remote tables as well as local tables. For more information
- use the Database Desktop on-line help file (DBD.HLP).
-
- Changes to Provided Examples
-
- The following SNIPIT examples have been added or changed:
-
- - FILTCOMP.C: Comparison filter (New)
-
- - FILTCONT.C: Continue filter (New)
-
- - ADDALIAS.C: Adding and deleting aliases (New)
-
- - KEYUPDT.C: Keyed updates (New)
-
- - LSQLLIVE.C: Local and remote dynasets (Modified)
-
- - SQLBIND.C: Local and remote parameter binding (Modified)
-
- - UPDTCRNT.C: Cursor symantics (New)
-
- - STORPROC.C: Using stored procedures (New)
-
- - CR8TXTBL.C: Text table using a schema file (Modified)
-
- - DBLOGIN.C: Accessing encrypted dBASE tables (New)
-
- - TEXTEXP.C: Exporting test file using a schema file (Modified)
-
- - INPUTREQ.C: Accessing tables with a missing or invalid index (New)
-
- The following are examples of using the BDE in a DLL for use with
- PDOXWIN in OPAL:
-
- - SEEK: Search dBASE expression indexes.
-
- - RESTRUCT: Restructure a table.
-
- The following are examples of using the BDE with Delphi:
-
- - FILTER: Using a filter with a TTable
-
- - TABLEENH: Creating a new Table derived control with Block functionality.
-
-
- X. Getting Help & Reporting Bugs
- -------------------------------------
- To get technical support from Borland and to report bugs, use CompuServe.
- Type GO BDEVTOOL from any '!' prompt and leave your message in section 4.
-
- For information on phone support contact Borland at (800) 839-9777.
-
-
- XI. Product Information
- ------------------------
- For information about any Borland products, contact Borland in the
- U.S. at (408) 431-1000. International customers should contact the
- nearest Borland International office.
-