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 [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [A]{1}───────A ─┐ │ ├─A00 ─┼─M00TA00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Entries Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [E]{1}───────E ─┐ │ ├─E00 ─┼─M00TE00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Identity Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [I]{1}───────I ─┐ │ ├─I00 ─┼─M00TI00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Join Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [J]{1}───────J ─┐ │ ├─J00 ─┼─M00TJ00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Local Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [L]{1}───────L ─┐ │ ├─L00 ─┼─M00TL00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Metadata Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [M]{1}───────M ─┐ │ ├─M00 ─┼─M00TM00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Settings Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [S]{1}───────S ─┐ │ ├─S00 ─┼─M00TS00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Versions Tables [M]{1}───────M ─┐ │ [0-9A-Z]{2}──00─┼─M00T─┐ │ │ [T|V]{1}─────T ─┘ │ │ [V]{1}───────V ─┐ │ ├─V00 ─┼─M00TV00X00 [0-9A-Z]{2}──00─┘ │ │ [X]{1}───────X ─┐ │ ├─X00 ─┘ [0]{2}───────00─┘

Data Size Convention

;data size convention (where n is integer number)
NUMBER : 1 + 2 + 3 + 6 +  9 + 12 + 15 +  18 +  21 + 24
STRING : 1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 + 256 + 2^n
DATE   : yyyy-MM-dd    |   yyyy-MM-dd'T'HH:mm:ss

${\begin{array}{lcr}f(a)&=&a+2a+3a+4a+5a+6a+7a+8a+na\\f(3)&=&3+6+9+12+15+18+21+24+27\\\end{array}}$

---

${\begin{array}{lcr}f(a)&=&a^{0}+a^{1}+a^{2}+a^{3}+a^{4}+a^{5}+a^{6}+a^{7}+a^{8}+a^{n}\\f(a)&=&2^{0}+2^{1}+2^{2}+2^{3}+2^{4}+2^{5}+2^{6}+2^{7}+2^{8}+2^{n}\\f(2)&=&1+2+4+8+16+32+64+128+256+512\\\end{array}}$

References

• Oracle SQL Developer
• Base64
• Base36
• Base32