rho Q.»Qo0ovoo2iooonq35
+50
HRHRAODO- à
OW
In
2e
is
ng
11
objects in the database. 2nd
degree files store keywords for
single classes, while 3rd degree
ones are files containing the
object and files storing the
meta-data to the object. So to
each object two files exist
one file with the actual data,
p.e. the image, and another one
with the information (meta-
data).
The logical model hides the
actual data structure from the
user. Fig 2.1 shows a scheme of
our logical model.
user-interfaces to control these
rouintes. The modules are coded
in WAVE. The interface should be
a graphical one, mainly
controlled by mouse and cursor.
WAVE offers a possibility to
create such interfaces with a
tool called WAVE-WIDGETS.
Unfortunately this tool does
just work under the window-
system SunView. The project
needs something to work under
both SunView and X-Windows (with
the advantage of network-
processing ability). So first we
created a low-level menu-system
CL. 1 CL.
CL. 3 CL. n
| des L..
Re iaynl. e ll
Ob. 1.1 Ob 1.2 Ob. 2.1 Ob. 3.1 Ob. n.1
IL.1.1 I1.2.1]|]I1.2.2 I2.1.1 I3.1.1 In.1.1
Figure 3.1 : Logical Model (Cl - cluster, Ob - object, I - Info)
Main elements are the objects,
p.e. a SAR-image. Objects are
arranged in clusters (classes of
objects with identical data
structure). A11 clusters
together form the DB. To each
object a set of meta-data is
stored.
2.3 Database Modules
To work with the database we
need modules to manage data and
retrieve information as well as
441
(WaveMenu), which simply opens a
window and draw some
buttons.These buttons may be
pushed by clicking on them with
the mouse. According to which
button is pressed a module, p.e.
edit an entry, is called. Since
all routines are programmed
modular, it should be easy to
adjust the entire system to a
more sophiticated menu-system,
which in future may be available
for WAVE under X-Window. Fig.
3.1 shows an example of a menu
(here IMC-main-menu)
