Ex/Basic/DS.tab database system ; vendor ; platform ; query language; price; $WebPage Sav Z DBMS 2.0 ; Technopoles-M,Anet; Java ; Z ; $0099 Sav Z Server 1.0 ; Technopoles-M,Anet; Java ; Z ; $0199; "../data/page1.html" SQL Server 6.5-5 ; Microsoft ; Win 95,Win 98,Win NT; SQL ; $1200 SQL Plus 8.0 Win95; Oracle ; Win 95,Win 98,Win NT; SQL ; NoneFirst field is properly primary key, it may be coded by numbers #1, #2 , … . For example:
database system; name ; version #1 ; Sav Z DBMS; 2.0Z Server generates browser's interface on the basis of the table data imported into Z database, SavZS1.jpg screenshot.
Ex/Advanced/DS0.tab database; price personal; "< $199" server ; ">= $199"
Ex/Advanced/DS1.tab database:personal; vendor ; platform; query language; price; $WebPage Sav Z DBMS 2.0 ; Technopoles-M,Anet; Java ; Z ; $0099
Ex/Advanced/DS2.tab database:server ; vendor ; platform ; query language; price; $WebPage Sav Z Server 1.0 ; Technopoles-M,Anet; Java ; Z ; $0199; "../data/page1.html" SQL Server 6.5-5 ; Microsoft ; Win 95,Win 98,Win NT; SQL ; $1200 SQL Plus 8.0 Win95; Oracle ; Win 95,Win 98,Win NT; SQL ; NoneThe ':' symbol is used for setting class hierarchy. The objects (key fields) of DS1.tab and DS2.tab inherit the price attribute of the DS0.tab.
As result Z Server generates another more constructive
dialog. The dialog, properly, consists of the 4 phases. Next example images
passing to the "../data/page1.html" web page of the Sav Z
Server 1.0 database that featured by the
">= $199" price.
1. Chose class of the target objects.
database
database:personal database:server |
2. Select source attributes of the target class.
database
platform price query language vendor |
3. Select values of the source attributes.
If need be table of the target objects, select target attributes.
Target attributes
database platform price query language vendor |
Source values
price: "< $199" ">= $199" $0099 $0199 $1200 None |
4. Choose target object and pass via its URL reference (if possibly).
database | price |
server | ">= $199" |
server:SQL Plus 8.0 Win95 | None |
server:SQL Server 6.5-5 | $1200 |
server:Sav Z Server 1.0 | $0199 |
We can import table data that may be showed by distinct ways.
development tool ; language; platform ; feature Visual Cafe 3.0 DDE ; Java ; Win 95,Win 98,Win NT ; visual components Borland JBuilder 3.0; Java ; UNIX,Win 95,Win 98,Win NT; visual components1. Abbreviation
development tool ; language; platform ; feature Visual Cafe 3.0 DDE ; Java ; Win 95,Win 98,Win NT ; visual components Borland JBuilder 3.0; Java ; UNIX,Win 95,Win 98,Win NT; vis*2. Variable
development tool ; language; platform ; feature Visual Cafe 3.0 DDE ; Java ; [$p1={Win 95,Win 98,Win NT}]; visual components Borland JBuilder 3.0; Java ; UNIX,=$p1 ; =vis*3. Query
Ex/Advanced/DT1.tab development tool ; vendor ; price Visual Cafe 3.0 DDE ; Symantec ; $0540 Borland JBuilder 3.0; Inprise ; $0299We can use queries with familier attributes.
Ex/Advanced/DT2.tab development tool ; language ; platform ; feature =(vendor:Symantec) ; Java ; [$p1={Win 95,Win 98,Win NT}]; visual components =(:Inprise, price:$299); =((vendor:Symantec)); UNIX,=$p1 ; =vis*Remark that column name defines class context of the field expression. The =(vendor:Symantec) expression of the development tool column will be really =development tool:(vendor:Symantec). The expressions are recognized row by row from left to right.