Convention for Database Tables

static char *base36enc(long unsigned int value) {
	char base36[36] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	/* log(2**64) / log(36) = 12.38 => max 13 char + '\0' */
	char buffer[14];
	unsigned int offset = sizeof(buffer);

	buffer[--offset] = '\0';
	do {
		buffer[--offset] = base36[value % 36];
	} while (value /= 36);

	return strdup(&buffer[offset]); // warning: this must be free-d by the user
}

static long unsigned int base36dec(const char *text) {
	return strtoul(text, NULL, 36);
}

Types of Table

Order	Code	Types	Purpose	Tables	Views
F	A	Audit	Audit Tables	M00TA00X00 ~ MZZTAZZX00	M00VA00X00 ~ MZZVAZZXZZ
D	E	Entries	Entries Tables	M00TE00X00 ~ MZZTEZZX00	M00VE00X00 ~ MZZVEZZXZZ
A	I	Identity	Identity Tables	M00TI00X00 ~ MZZTIZZX00	M00VI00X00 ~ MZZVIZZXZZ
E	J	Join	Join Tables n - n	M00TJ00X00 ~ MZZTJZZX00	M00VJ00X00 ~ MZZVJZZXZZ
G	L	Local	Local Tables	M00TL00X00 ~ MZZTLZZX00	M00VL00X00 ~ MZZVLZZXZZ
B	M	Metadata	Metadata Tables	M00TM00X00 ~ MZZTMZZX00	M00VM00X00 ~ MZZVMZZXZZ
C	S	Settings	Settings Tables	M00TS00X00 ~ MZZTSZZX00	M00VS00X00 ~ MZZVSZZXZZ
H	V	Versions	Versions Tables	M00TV00X00 ~ MZZTVZZX00	M00VV00X00 ~ MZZVVZZXZZ

Nomenclature

[M]{1}────────────────M ─┐
                         │
[0-9A-Z]{2}───────────00─┼─M00T─┐
                         │      │
[T|V]{1}──────────────T ─┘      │
                                │
[A|E|I|J|L|M|S|V]{1}──M ─┐      │
                         ├─M00 ─┼─M00TM00X00
[0-9A-Z]{2}───────────00─┘      │
                                │
[X]{1}────────────────X ─┐      │
                         ├─X00 ─┘
[0-9A-Z]{2}───────────00─┘

Audit Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00AYZ
[A]{1}──────A─┐    │
              ├─AYZ┘
[0-9A-Z]{2}─YZ┘

Entries Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00EYZ
[E]{1}──────E─┐    │
              ├─EYZ┘
[0-9A-Z]{2}─YZ┘

Identity Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00IYZ
[I]{1}──────I─┐    │
              ├─IYZ┘
[0-9A-Z]{2}─YZ┘

Join Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00JYZ
[J]{1}──────J─┐    │
              ├─JYZ┘
[0-9A-Z]{2}─YZ┘

Local Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00LYZ
[L]{1}──────L─┐    │
              ├─JYZ┘
[0-9A-Z]{2}─YZ┘

Metadata Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00MYZ
[M]{1}──────M─┐    │
              ├─MYZ┘
[0-9A-Z]{2}─YZ┘

Settings Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00SYZ
[S]{1}──────S─┐    │
              ├─SYZ┘
[0-9A-Z]{2}─YZ┘

Versions Tables

[T]{1}──────T─┐
              ├─T00┐
[0-9A-Z]{2}─00┘    │
                   ├─T00VYZ
[V]{1}──────V─┐    │
              ├─VYZ┘
[0-9A-Z]{2}─YZ┘

References

• Base64
• Base36
• Base32