Embedded SQL Pertemuan 9 Matakuliah: T0413/Current Popular IT II Tahun: 2007

Bina Nusantara Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu menciptakan aplikasi sistem basisdata menggunakan konsep embeded SQL di dalam program

Bina Nusantara Outline Materi Creating Application in SQL Why embed SQL? How do you embed SQL? How it works? Privillages of an embedded SQL application

Bina Nusantara Creating Application in SQL Embedded hard coded SQL statement Write programs that device SQL statement at runtime called Dynamic SQL Can writing to an API

Bina Nusantara Creating Application in SQL (Cont.) Extend SQL with procedural constructs to make it computationally complete Module language

Bina Nusantara Why embed SQL ? Allowing complex procedural programs that address the DB it self through SQL Let us to set aside the complexing of operating on tables in a procedural language that is not oriented to this kind of data structured

Bina Nusantara How do you embed SQL ? Phrase EXEC SQL (Execute SQL) Host language based on ISO : – C – COBOL – FORTRAN – JAVA – MUMPS – PASCAL – PL / I

Bina Nusantara How Embedded SQL Actually Works Precompile the program before copiling it Embedded SQL statement is removed from the program and replaced with subroutine calls in the host language DBRM / access module

Bina Nusantara How Embedded SQL Actually Works (Cont.) Ordinary host language compiler must be turn on the host language program Linker links the private DBMS to a DBMS library BIND evaluates the contents of the access module

Bina Nusantara Privileges of an embedded SQL Operation Invoker’s rights Definer’s rights