Common Database System comparison DB2 database _DB2

Looking at the DB2 tutorial is: Common Database system comparison DB2 database.
DB2 is a product of IBM, originating from System R and system r*. He supports from PCs to UNIX, from minicomputer to Mainframe, from IBM to non-IBM (HP and
SUN UNIX System, etc.) a variety of operating platforms. He can run either independently on the host or in a client/server environment. which service
Platform can be os/400,aix,os/2,hp-unix,sun-solaris and other operating systems, the client platform can be OS/2 or Windows, Dos, AIX, hp-
UX, SUN Solaris and other operating systems.

Database server

The DB2 database core, also known as the DB2 public server, employs a multiple-process, multiple-thread architecture that can run on a variety of operating systems and, depending on the corresponding
The platform environment has been adjusted and optimized so that it can achieve better performance.

The features of the DB2 core database are:

(1) Support for object-oriented programming

DB2 supports complex data structures, such as unstructured text objects, which can be searched for Boolean matching, closest matching, and arbitrary matching of unstructured text objects.
You can create user data types and user-defined functions.

(2) Supporting multimedia applications

DB2 supports a Sophomore object (BLOB) that allows access to binary large objects and large text objects in the database. Among them, binary large objects can be used to store more
The media object.

(3) Backup and recovery capabilities

(4) Support for stored procedures and triggers, which users can display when they are in a table, defining complex integrity rules

(5) Supported silicon SQL query

(6) Support heterogeneous distributed database access

(7) Support data replication

Development tools

IBM offers a number of development tools, mainly visualizer Query, VisualAge, Visualgen.

Visualizer is an integrated tool software in a client/server environment, including visualizer query visual search tools, Visualizer
Ultimedia Query Visual Multimedia Query tool, Visualizer Chart visual icon tool, visualizer procedure visualization process tool,
Visualizer Statistics visual statistical tool, visualizer plans visual planning tool, visualizer development visual developer
With.

VisualAge is a powerful visual object-oriented application development tool, which can greatly improve the efficiency of software development. Its main characteristics are:

(1) Visual programming tools.

(2) Part library. This includes a prefab that supports graphical user interfaces, and a generic part that contains database queries, transactions, and local, remote functions.

(3) relational database support.

(4) Group programming.

(5) Support for enhanced dynamic connection libraries.

(6) Support multimedia.

(7) data sharing is supported.

Visualgen is an important part of an efficient development program offered by IBM. It integrates the fourth generation language, client/server and object-oriented technology, giving
Provides a complete and efficient development environment for the user.

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