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1. The precompiler does three things.

2. J/SQL is currently implemented as a precompiler.

3. This paper discusses a precompiler of computer telephony flow-CTFPC.

4. Second, we introduce the precompiler technics for Data Sublanguage.

5. For example, embedded SQL is implemented via a precompiler that reads C or COBOL source code and substitutes SQL calls with C or COBOL function calls that C or COBOL compilers understand.

6. The precompiler replaces any executable SQL that was in your source with a COBOL CALL to a COBOL-DB2 interface module.

7. According to the principle of compiling, a precompiler handling errors for C language was designed and realized.

8. The precompiler improved improves the mechanism of handling errors in C language[sentencedict .com], and increased increases software development efficiency.

9. The third thing that the precompiler does seems contrary to reason: You have very carefully embedded SQL into your COBOL program—the precompiler just as carefully removes it.

10. To make matters more complicated, the precompiler gives these fraternal twins the same name, the name of the program, and they go down separate paths outside of DB2's control.

11. You see, the precompiler is not connected to DB2, which means that running PRECOMPILE does not add any DB2 overhead.

12. Eventually, when Twin 1, the COBOL program, runs, it will need to find and identify Twin 2. Therefore, the precompiler "tattoos" each twin with a modified timestamp.

13. The precompilation processing for embedded DML language of MEDB is presented with emphasis on the system mechanism and the objective code of the precompiler.