Yurttas/PL/DBL/oracle/F/03/Company-A/Project-def.pc
Revision as of 23:41, 4 November 2013 by MassBot1 (talk | contribs) (Created page with "<syntaxhighlight lang="text" line start="1" enclose="div"> ββREM REM REM Project-def.pc REM REM: #include <stdio.h> #include <sqlca.h> #define UNAME_LEN 32 #define PWD_LE...")
1/*
2REM
3REM
4REM Project-def.pc
5REM
6REM
7*/
8
9#include <stdio.h>
10#include <sqlca.h>
11
12#define UNAME_LEN 32
13#define PWD_LEN 16
14
15VARCHAR username[UNAME_LEN]; /* VARCHAR is an Oracle-supplied struct */
16VARCHAR password[PWD_LEN]; /* varchar can be in lower case also. */
17
18char u_name[UNAME_LEN];
19char pwd[PWD_LEN];
20
21void connect_to_oracle();
22void sql_error();
23
24void main(int argc, char* argv[]) {
25 connect_to_oracle();
26
27 EXEC SQL
28 WHENEVER SQLERROR DO sql_error("Error in CREATE_table: Project");
29
30 EXEC SQL
31 CREATE TABLE Project(pname VARCHAR2(24) NOT NULL,
32 pnumber INTEGER NOT NULL,
33 plocation VARCHAR2(24),
34 dnum INTEGER NOT NULL,
35 PRIMARY KEY(pnumber),
36 FOREIGN KEY(dnum) REFERENCES Department(dnumber));
37
38 EXEC SQL COMMIT WORK RELEASE;
39
40 exit(0);
41}
42
43
44void sql_error(char* msg) {
45 char err_msg[128];
46 int buflen, msglen;
47
48 EXEC SQL WHENEVER SQLERROR CONTINUE;
49
50 printf("%s \n", msg);
51 buflen = sizeof(err_msg);
52 sqlglm(err_msg, &buflen, &msglen);
53 printf("%.*s \n", msglen, err_msg);
54 exit(1);
55}
56
57
58void connect_to_oracle() {
59 /* get your username/passwd from "user_pwd.txt" file */
60
61 FILE *in_file;
62 in_file = fopen("user_pwd.txt", "r");
63 fscanf(in_file, "%s", u_name);
64 fscanf(in_file, "%s", pwd);
65
66 strncpy((char *) username.arr, u_name, UNAME_LEN);
67 username.len = strlen((char *) username.arr);
68
69 strncpy((char *) password.arr, pwd, PWD_LEN);
70 password.len = strlen((char *) password.arr);
71
72 EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
73 EXEC SQL CONNECT :username IDENTIFIED BY :password;
74
75 printf("connected to oracle - \n");
76}