diff --git a/src/modb_p.c b/src/modb_p.c
new file mode 100644
index 0000000..7048155
--- /dev/null
+++ b/src/modb_p.c
@@ -0,0 +1,27 @@
+#include "modb_p.h"
+#include "strext.h"
+
+char *modbTableName(struct modb_t *modb, const char *suffix, size_t suffix_len)
+{
+  str_builder *sb;
+  char *str;
+  size_t len;
+
+  if ((sb = strbld_create()) == 0) {
+    return 0;
+  }
+
+  modbTableName_sb(sb, modb, suffix, suffix_len);
+
+  if (strbld_finalize_or_destroy(&sb, &str, &len) != 0) {
+    return 0;
+  }
+
+  return str;
+}
+
+void modbTableName_sb(str_builder *sb, struct modb_t *modb, const char *suffix, size_t suffix_len)
+{
+  strbld_str(sb, modb->name, modb->name_len);
+  strbld_str(sb, suffix, suffix_len);
+}
diff --git a/src/modb_p.h b/src/modb_p.h
new file mode 100644
index 0000000..be3da44
--- /dev/null
+++ b/src/modb_p.h
@@ -0,0 +1,27 @@
+#ifndef H__MODB_P__
+#define H__MODB_P__
+
+#include <stddef.h>
+
+#include "modb_types.h"
+
+
+#define SYS_TABLE "_sys"
+#define META_TABLE "_meta"
+#define OBJECTS_TABLE "_objects"
+#define MDO_GROUPS_TABLE "_mdo_groups"
+
+#define USERS_TABLE "_users"
+#define GROUPS_TABLE "_groups"
+#define USER_GROUPS_TABLE "_user_groups"
+
+#define META_EXT_TABLE "_meta_ext"
+
+
+typedef struct str_builder_t str_builder;
+
+char *modbTableName(struct modb_t *modb, const char *suffix, size_t suffix_len);
+void modbTableName_sb(str_builder *sb, struct modb_t *modb, const char *suffix, size_t suffix_len);
+
+
+#endif // H__MODB_P__