Btrvgen++ lets you define your Tables, Columns and Keys to
your database files, define table relationships and then will
generate a C++ class interface with the push of a button.
Btrvgen++ will work off of an existing DDF or generate one for
you.
Btrvgen++ is a Database Generation System for developing C++ applications that use the Btrieve Record Manager via Classic Software's Btrv++™ Class Library for C++. Btrv++ greatly simplifies Btrieve development for C++ programmers, offering order-of-magnitude productivity gains. Btrvgen++ goes even further:
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It actually generates C++ classes that
represent your database schema and tables, with member
functions defined for most everyday uses of Btrieve via
the Btrv++ parent class. Btrvgen++'s generated member functions will
provide you with ways to open and close your tables en
masse, perform existence tests, counts, and cascading
deletes. Btrvgen++'s generated member functions will
provide you with extremely flexible set retrieval
operations based on the table's defined keys. Included
are both single-record retrieval and iteration functions. It generates documentation for the generated
classes, to enable you to be fully productive with the
generated code in the minimum possible time. It provides member functions for all defined
relationships. These functions will enable you to
retrieve joined sets of records without any setup
whatsoever. You simply define the relationship in terms
of matching key structures, cardinality, and ownership
vs. referencing. Btrvgen++ takes care of the rest,
providing single-record retrieval and iteration functions
to support the relationship as you have defined it. Btrvgen++ also goes beyond the limitations
of the relational model to support hierarchical Btrvgen++ has a built in full featured
Btrieve DDF file editor for Windows. It can merge
multiple DDF files into one master DDF, create subsets of
DDFs, build DDF files from scratch, Create Btrieve files,
import key definitions off of existing file and more.
Gain access to your Btrieve files for products like
Microsoft Access, Crystal Reports, R&R Report Writer
and many other report generators. Btrvgen++ gives you the means to re-engineer
existing databases for which you don't have a DDF data
dictionary, because it can read table and key attributes
from Btrieve files. You supply the record structure, and
Btrvgen++ does the rest.Btrvgen++'s Schema Editor allows you to define the tables, columns, keys, and relationships within your schema. The Schema Editor has complete on-line help documenting all Btrvgen++ features. With Btrvgen++, it is difficult to violate Btrieve's complex rules for table and index definition.
Btrvgen++'s Class Generator then produces a set of C++ classes
derived from the Btrv++ BTRVDBOBJ class, which encompasses all
Btrieve functionality and adds many value added features
including record and key buffer management. The generated classes
include one class for each table and a schema meta-class. You can
derive other classes from these to add your own member functions
and data to implement non-database tasks or extend the database
functionality already present in the generated classes.
Each generated table class manages your record buffer and all key
buffers for you, and eliminates the need for key structures
except to receive values on return from Btrieve Get-Key
operations. Keyed Get operations (e.g. Get Equal, Get Greater Or
Equal, etc.) are implemented through member functions that take
as arguments the values that would be put in the key buffer data
structure. For example, in an order entry system, an order is
kept in a table that has two keys, order number (ORDERNUM) and
customer ID plus date (CUSTIDDATE). The generated ORDER class
will contain the following member functions:
GetFirstORDERNUM(void)
GetLastORDERNUM(void)
ForEachORDERNUM(void)
GetEqualORDERNUM(unsigned OrderID)
Others would be generated to support use of the ORDERNUM key. For
the segmented CUSTIDDATE key, there would be similar functions.
Among others:
GetGreaterOrEqualCUSTIDDATE(unsigned int CustID, sDATE Date)
GetNextCUSTIDDATE(unsigned int CustID, sDATE Date)
GetGreaterOrEqualCUSTIDDATE(unsigned int CustID)
GetNextCUSTIDDATE(unsigned int CustID)
ForEachByCUSTIDDATE(unsigned int CustID)
ForEachByCUSTIDDATE(unsigned int CustID, sDATE Date)
Constrained set retrieval functions allow you to retrieve sets of
records whose contents are determined by partial matches on
segmented keys and complete matches on duplicate keys. The sets
produced are equivalent to using a SQL query like SELECT * FROM
ORDER WHERE CUSTID = x AND DATE = y.
Btrvgen++ uses the constrained set retrieval approach to generate functions that implement standard operations for all defined relationships between the tables in your database. For example, in an order entry system, an order is kept in a table that is on the "many" side of a one-to-many relationship with the customer table, and on the "one" side of a one-to-many relationship with the order-line-item table. The order-line-item table is on the "many" side of a one-to-many relationship with an inventory item table.
There are many benefits to generated code, not least among
them being the dramatically increased level of productivity. But
another less obvious benefit is consistency. Once you get used to
working with Btrvgen++-generated classes, you will know what
functions are available, what their names are, and what the
arguments are. If you know the schema and you know the structure
of the generated classes, the code generator ensures the
functions are there, with consistent naming and argument
conventions, every time.
All the database access power you need to create dynamite
applications will be at your fingertips. Rather than spending
days struggling with the details of Btrieve you'll focus on what
you do best — designing and coding applications to meet your
customers' needs!
Although Btrvgen++ generates classes that can be compiled to
work in any Btrieve environment supported by Btrv++ (DOS,
Windows, Win32 and OS/2). Btrvgen++ itself is a Windows program,
and it requires Windows 3.1, Windows NT or Windows 95, the Btrv++
class library, and a C++ compiler such as Microsoft Visual C++,
Borland C++ (3.1, 4.x, 5.x), Symantec, IBM, etc. Btrvgen++ also
comes with the Btrieve run-time library for Windows (wbtrcall.dll
versions 5.x and 6.x).
Click here for a set of graphical images showing how easy it is to use Btrvgen++.
Our tools provide support for all versions of Pervasive SQL, Btrieve, and Netware Btrieve (32 or 16 bit). Supported software products include Crystal Reports, Macola, Great Plains, Dynamic, Platinum, Peachtree, Maximizer and many others. Programming tools supported include Visual Basic, Visual C++, Access, Visual Foxpro, Visual J++, ODBC and OLE DB drivers, VBA enabled applications and many other tools and utilities.
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Although Btrvgen++ does require Btrv++, you can purchase both together for one low price. DESCRIPTION PRICE Btrvgen++ $229.95 Btrv++ $249.95 Btrvgen++,Btrv++ bundle $349.95
Order Btrv++ or Btrvgen++.