Database Reference
In-Depth Information
•
Through Oracle Forms Developer (OFD), Oracle also allows
Web-accessible PL/SQL-based applications to be constructed.
These applications may access local or remote Oracle
(or heterogeneous) databases.
This development represents a huge step forward for Oracle, and has no doubt
fuelled its invigorated claim of being the leading software engineering firm for
Web-accessible databases.
25.5 Implementation with DB2
Like Oracle, DB2 implements a Web-accessible database (this applies to DB2 8 and
subsequent versions). This is achieved through the products DB2 Connect, DB2
Everyplace and WebSphere in the following ways:
•
If you configure a mainframe, or mini computer to be a DB2
server, and create your DB2 database on it, you can access the
database over an intranet, the Internet, or an extranet by running
DB2 Connect from your client machine. As in the case of the
Oracle database, you will need to know the machine name, the
domain name and port number that the database server listens
on, in order to connect to it.
•
DB2 Everyplace is a miniscule version of DB2 that runs on mobile
devices such as
personal digital assistants
(PDAs), cell phones,
etc. DB2 Everyplace can be used as a local independent DBMS, or
to query information residing at a remote database server, via the
WWW.
•
Through WebSphere, IBM allows Web-accessible Java-based
applications to be constructed. These applications may access
local or remote DB2 (or heterogeneous) databases. There is also
a WebSphere Everyplace version for PDAs, cell phones and other
pervasive devices.
Like Oracle, IBM also claims to be the leading software engineering firm for
Web-accessible databases. The truth is, both companies are archrivals at the top of the
database systems market.
