1. Batak Programming Language
Design Perspective

2. Programming language Extreme opinions Proportional ones Blind fanatism
DON’T CARE (they are just the same)
Proportional ones
Language is very important
Communication is of utmost important
Language is a means of communication (bad language => bad communication)
No single language suits every needs
A set of languages can suit every needs

3. 7 language [style] s to fill every needs ?
General purpose programming-language
Database-oriented programming-language
Shell programming-language
Application-level scripting language (XML?)
Assembly (style) programming-language
Metalanguage (used in YACC)
Binary-style (intermediate, machine)

4. May not be the category of language
String processing (Perl, AWK)
Internal language of document (PDF; internal format of Excel, Word documents)
PCL (Printing Command Language)
Logic programming-language
Functional programming-language

5. Integration with relational database (1)
Oracle SQL (real world)
CREATE TYPE student AS OBJECT (
id NUMERIC(8),
name VARCHAR(30) );
CREATE TABLE IT_students OF student;
CREATE TABLE mech_students OF student;

6. Integration with relational database (2)
Some SQL (?)
CREATE TYPE student :=
{ numeric<9> id; char[20] name; };
CREATE TABLE <student> IT_students,
mech_students ( PRIMARY KEY {id} );

7. Integration with relational database (3)
In Batak
Program P;
Type student := { numeric<9> id; char[20] name; };
Table<student> IT_students, mech_students ( PRIMARY KEY {id} );
integer main() {
INSERT mech_students INTO IT_students;
/* not INSERT INTO IT_students SELECT ... */ }