Information Technology Reference
In-Depth Information
Application programs
Client
API
VBL
Schema
manager
SQL
Server
DML driver
DDL processor
Table manager
Indexer
Data file manager
Index manager
File system
F
IGURE
1.3.
Systemarchitecture, showing therelationship between the major
components. Each componentisan independent process.
Note thelack of a
single interface to thefilesystem.
Fig. 11.10
Clutter simplified. A revision of the figure in Fig.
11.9
. The overall structure is more
prominent, while some minor features have been discarded and the unnecessary inner boxes have
been removed. Use of shading would give further improvements
black-and-white (a vibrant colour photograph can be surprisingly dull when trans-
formed to greyscale), and ensure that it is of sufficient resolution. The problem
of resolution is even more acute for screenshots, as the pixel density of a screen is
much lower than that of print. Screenshots are used unnecessarily in far too many
papers, and only occasionally illustrate anything of fundamental interest.
2
Illustrations are covered by copyright; figures from another source can only be
re-used with permission of the author and the publisher of the original. If you wish
to re-use a figure, get permission to do so and identify the original author and
source, preferably in the caption. You may also need to include the original copyright
statement.
2
Sometimes authors include material in a paper that strongly suggests that the work is not of high
quality. An example is when authors use a tool to create a diagram, but, instead of exporting the
diagram in a portable, scalable format such as PDF, take a screenshot of the tool. Such screenshots
can include irrelevant materials such as the tool's menus, are low resolution, don't print well, and
look incompetent.
