Getting started with Berkeley DB

1 Introduction

 

2. Download and install 

Install

Environment Variable deployment

Compile

 

3. Common Operations Open Database

int DB->open(DB *db, DB_TXN *txnid, const char *file,                     const char *database, DBTYPE type, u_int32_t flags, int mode); eg：if ((ret = db_create(&dbp, NULL, 0)) != 0) {      fprintf(stderr, "db_create: %s\n",     db_strerror(ret));     exit (1);  }  if ((ret = dbp->open(dbp, NULL, DATABASE, NULL,      DB_BTREE, DB_CREATE, 0664)) != 0) {     dbp->err(dbp, ret, "%s", DATABASE);     exit (1);  } 

Insert

Retrieve Data

Delete

eg：key.data = "sport"; key.size = sizeof("sport"); if ((ret = dbp->del(dbp, NULL, &key, 0)) == 0) printf("db: %s: key was deleted.\n", (char*)key.data); else dbp->err(dbp, ret, "DB->del"); 

Close Database

Refresh cache to Hard Disk

More

 

 

 

 

Posted by: Large CC | 17SEP, 2013

Blog: blog.me115.com

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