SOTDS .DAT Format conforms to ASCII 0-255 only. Unicode is not supported in either .DAT format or within the entire SOTDS Suite.
It should be noted that every database I have created obey to the rules listed below. If you make your own databases from scratch (example converted from CSV), you will have to obey to the same rules to allow proper indexing as well as keeping the .DAT file within the specifications!
Remember that SOTDS is a search engine and not a typographical correct representation of any text indexed by the database, or as search results. This means in human understanding there is no different meaning if your read the word "lucky" instead of "LUCKY". They both means the same. The forced lowercase also helps for indexing complexity and ensuring fastest search possible.
Update August 2017
Decided to remove additional characters as they are basically just blank and useless for searching: 129,141,143,144 and 157 marked in RED below.
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Blue = SOTDS Control Characters: (These has to be present, and not be used by entries).
0, 2, 4, 5, 10 and 13.
Green = Allowed characters: (Basically all human readable used characters in text as well as lowercased letters and all numbers).
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 128, 130, 131, 132, 133, 134, 135, 136, 137, 139, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 158, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 215, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254 and 255.
Red = Ignored / Not Allowed: (These characters are either unpressable by keyboard, unvalid in text or uppercased characters).
1, 3, 6, 7, 8, 9, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 127, 129, 138, 140, 141, 142, 143, 144, 157, 159, 160, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 216, 217, 218, 219, 220, 221 and 222.
0 | 00 | NUL | Null char |
1 | 01 | SOH | Start of Heading |
2 | 02 | STX | Start of Text |
3 | 03 | ETX | End of Text |
4 | 04 | EOT | End of Transmission |
5 | 05 | ENQ | Enquiry |
6 | 06 | ACK | Acknowledgment |
7 | 07 | BEL | Bell |
8 | 08 | BS | Back Space |
9 | 09 | HT | Horizontal Tab |
10 | 0A | LF | Line Feed |
11 | 0B | VT | Vertical Tab |
12 | 0C | FF | Form Feed |
13 | 0D | CR | Carriage Return |
14 | 0E | SO | Shift Out / X-On |
15 | 0F | SI | Shift In / X-Off |
16 | 10 | DLE | Data Line Escape |
17 | 11 | DC1 | Device Control 1 (oft. XON) |
18 | 12 | DC2 | Device Control 2 |
19 | 13 | DC3 | Device Control 3 (oft. XOFF) |
20 | 14 | DC4 | Device Control 4 |
21 | 15 | NAK | Negative Acknowledgement |
22 | 16 | SYN | Synchronous Idle |
23 | 17 | ETB | End of Transmit Block |
24 | 18 | CAN | Cancel |
25 | 19 | EM | End of Medium |
26 | 1A | SUB | Substitute |
27 | 1B | ESC | Escape |
28 | 1C | FS | File Separator |
29 | 1D | GS | Group Separator |
30 | 1E | RS | Record Separator |
31 | 1F | US | Unit Separator |
32 | 20 | Space | |
33 | 21 | ! | Exclamation mark |
34 | 22 | “ | Double quotes (or speech marks) |
35 | 23 | # | Number |
36 | 24 | $ | Dollar |
37 | 25 | % | Procenttecken |
38 | 26 | & | Ampersand |
39 | 27 | ‘ | Single quote |
40 | 28 | ( | Open parenthesis (or open bracket) |
41 | 29 | ) | Close parenthesis (or close bracket) |
42 | 2A | * | Asterisk |
43 | 2B | + | Plus |
44 | 2C | , | Comma |
45 | 2D | - | Hyphen |
46 | 2E | . | Period, dot or full stop |
47 | 2F | / | Slash or divide |
48 | 30 | 0 | Zero |
49 | 31 | 1 | One |
50 | 32 | 2 | Two |
51 | 33 | 3 | Three |
52 | 34 | 4 | Four |
53 | 35 | 5 | Five |
54 | 36 | 6 | Six |
55 | 37 | 7 | Seven |
56 | 38 | 8 | Eight |
57 | 39 | 9 | Nine |
58 | 3A | : | Colon |
59 | 3B | ; | Semicolon |
60 | 3C | < | Less than (or open angled bracket) |
61 | 3D | = | Equals |
62 | 3E | > | Greater than (or close angled bracket) |
63 | 3F | ? | Question mark |
64 | 40 | @ | At symbol |
65 | 41 | A | Uppercase A |
66 | 42 | B | Uppercase B |
67 | 43 | C | Uppercase C |
68 | 44 | D | Uppercase D |
69 | 45 | E | Uppercase E |
70 | 46 | F | Uppercase F |
71 | 47 | G | Uppercase G |
72 | 48 | H | Uppercase H |
73 | 49 | I | Uppercase I |
74 | 4A | J | Uppercase J |
75 | 4B | K | Uppercase K |
76 | 4C | L | Uppercase L |
77 | 4D | M | Uppercase M |
78 | 4E | N | Uppercase N |
79 | 4F | O | Uppercase O |
80 | 50 | P | Uppercase P |
81 | 51 | Q | Uppercase Q |
82 | 52 | R | Uppercase R |
83 | 53 | S | Uppercase S |
84 | 54 | T | Uppercase T |
85 | 55 | U | Uppercase U |
86 | 56 | V | Uppercase V |
87 | 57 | W | Uppercase W |
88 | 58 | X | Uppercase X |
89 | 59 | Y | Uppercase Y |
90 | 5A | Z | Uppercase Z |
91 | 5B | [ | Opening bracket |
92 | 5C | \ | Backslash |
93 | 5D | ] | Closing bracket |
94 | 5E | ^ | Caret - circumflex |
95 | 5F | _ | Underscore |
96 | 60 | ` | Grave accent |
97 | 61 | a | Lowercase a |
98 | 62 | b | Lowercase b |
99 | 63 | c | Lowercase c |
100 | 64 | d | Lowercase d |
101 | 65 | e | Lowercase e |
102 | 66 | f | Lowercase f |
103 | 67 | g | Lowercase g |
104 | 68 | h | Lowercase h |
105 | 69 | i | Lowercase i |
106 | 6A | j | Lowercase j |
107 | 6B | k | Lowercase k |
108 | 6C | l | Lowercase l |
109 | 6D | m | Lowercase m |
110 | 6E | n | Lowercase n |
111 | 6F | o | Lowercase o |
112 | 70 | p | Lowercase p |
113 | 71 | q | Lowercase q |
114 | 72 | r | Lowercase r |
115 | 73 | s | Lowercase s |
116 | 74 | t | Lowercase t |
117 | 75 | u | Lowercase u |
118 | 76 | v | Lowercase v |
119 | 77 | w | Lowercase w |
120 | 78 | x | Lowercase x |
121 | 79 | y | Lowercase y |
122 | 7A | z | Lowercase z |
123 | 7B | { | Opening brace |
124 | 7C | | | Vertical bar |
125 | 7D | } | Closing brace |
126 | 7E | ~ | Equivalency sign - tilde |
127 | 7F | Delete | |
128 | 80 | € | Euro sign |
129 | 81 | ||
130 | 82 | ‚ | Single low-9 quotation mark |
131 | 83 | ƒ | Latin small letter f with hook |
132 | 84 | „ | Double low-9 quotation mark |
133 | 85 | … | Horizontal ellipsis |
134 | 86 | † | Dagger |
135 | 87 | ‡ | Double dagger |
136 | 88 | ˆ | Modifier letter circumflex accent |
137 | 89 | ‰ | Per mille sign |
138 | 8A | Š | Latin capital letter S with caron |
139 | 8B | ‹ | Single left-pointing angle quotation |
140 | 8C | Œ | Latin capital ligature OE |
141 | 8D | ||
142 | 8E | Ž | Latin captial letter Z with caron |
143 | 8F | ||
144 | 90 | ||
145 | 91 | ‘ | Left single quotation mark |
146 | 92 | ’ | Right single quotation mark |
147 | 93 | “ | Left double quotation mark |
148 | 94 | ” | Right double quotation mark |
149 | 95 | • | Bullet |
150 | 96 | – | En dash |
151 | 97 | — | Em dash |
152 | 98 | ˜ | Small tilde |
153 | 99 | ™ | Trade mark sign |
154 | 9A | š | Latin small letter S with caron |
155 | 9B | › | Single right-pointing angle quotation mark |
156 | 9C | œ | Latin small ligature oe |
157 | 9D | ||
158 | 9E | ž | Latin small letter z with caron |
159 | 9F | Ÿ | Latin capital letter Y with diaeresis |
160 | A0 | Non-breaking space | |
161 | A1 | ¡ | Inverted exclamation mark |
162 | A2 | ¢ | Cent sign |
163 | A3 | £ | Pound sign |
164 | A4 | ¤ | Currency sign |
165 | A5 | ¥ | Yen sign |
166 | A6 | ¦ | Pipe, Broken vertical bar |
167 | A7 | § | Section sign |
168 | A8 | ¨ | Spacing diaeresis - umlaut |
169 | A9 | © | Copyright sign |
170 | AA | ª | Feminine ordinal indicator |
171 | AB | « | Left double angle quotes |
172 | AC | ¬ | Not sign |
173 | AD | | Soft hyphen |
174 | AE | ® | Registered trade mark sign |
175 | AF | ¯ | Spacing macron - overline |
176 | B0 | ° | Degree sign |
177 | B1 | ± | Plus-or-minus sign |
178 | B2 | ² | Superscript two - squared |
179 | B3 | ³ | Superscript three - cubed |
180 | B4 | ´ | Acute accent - spacing acute |
181 | B5 | µ | Micro sign |
182 | B6 | ¶ | Pilcrow sign - paragraph sign |
183 | B7 | · | Middle dot - Georgian comma |
184 | B8 | ¸ | Spacing cedilla |
185 | B9 | ¹ | Superscript one |
186 | BA | º | Masculine ordinal indicator |
187 | BB | » | Right double angle quotes |
188 | BC | ¼ | Fraction one quarter |
189 | BD | ½ | Fraction one half |
190 | BE | ¾ | Fraction three quarters |
191 | BF | ¿ | Inverted question mark |
192 | C0 | À | Latin capital letter A with grave |
193 | C1 | Á | Latin capital letter A with acute |
194 | C2 | Â | Latin capital letter A with circumflex |
195 | C3 | Ã | Latin capital letter A with tilde |
196 | C4 | Ä | Latin capital letter A with diaeresis |
197 | C5 | Å | Latin capital letter A with ring above |
198 | C6 | Æ | Latin capital letter AE |
199 | C7 | Ç | Latin capital letter C with cedilla |
200 | C8 | È | Latin capital letter E with grave |
201 | C9 | É | Latin capital letter E with acute |
202 | CA | Ê | Latin capital letter E with circumflex |
203 | CB | Ë | Latin capital letter E with diaeresis |
204 | CC | Ì | Latin capital letter I with grave |
205 | CD | Í | Latin capital letter I with acute |
206 | CE | Î | Latin capital letter I with circumflex |
207 | CF | Ï | Latin capital letter I with diaeresis |
208 | D0 | Ð | Latin capital letter ETH |
209 | D1 | Ñ | Latin capital letter N with tilde |
210 | D2 | Ò | Latin capital letter O with grave |
211 | D3 | Ó | Latin capital letter O with acute |
212 | D4 | Ô | Latin capital letter O with circumflex |
213 | D5 | Õ | Latin capital letter O with tilde |
214 | D6 | Ö | Latin capital letter O with diaeresis |
215 | D7 | × | Multiplication sign |
216 | D8 | Ø | Latin capital letter O with slash |
217 | D9 | Ù | Latin capital letter U with grave |
218 | DA | Ú | Latin capital letter U with acute |
219 | DB | Û | Latin capital letter U with circumflex |
220 | DC | Ü | Latin capital letter U with diaeresis |
221 | DD | Ý | Latin capital letter Y with acute |
222 | DE | Þ | Latin capital letter THORN |
223 | DF | ß | Latin small letter sharp s - ess-zed |
224 | E0 | à | Latin small letter a with grave |
225 | E1 | á | Latin small letter a with acute |
226 | E2 | â | Latin small letter a with circumflex |
227 | E3 | ã | Latin small letter a with tilde |
228 | E4 | ä | Latin small letter a with diaeresis |
229 | E5 | å | Latin small letter a with ring above |
230 | E6 | æ | Latin small letter ae |
231 | E7 | ç | Latin small letter c with cedilla |
232 | E8 | è | Latin small letter e with grave |
233 | E9 | é | Latin small letter e with acute |
234 | EA | ê | Latin small letter e with circumflex |
235 | EB | ë | Latin small letter e with diaeresis |
236 | EC | ì | Latin small letter i with grave |
237 | ED | í | Latin small letter i with acute |
238 | EE | î | Latin small letter i with circumflex |
239 | EF | ï | Latin small letter i with diaeresis |
240 | F0 | ð | Latin small letter eth |
241 | F1 | ñ | Latin small letter n with tilde |
242 | F2 | ò | Latin small letter o with grave |
243 | F3 | ó | Latin small letter o with acute |
244 | F4 | ô | Latin small letter o with circumflex |
245 | F5 | õ | Latin small letter o with tilde |
246 | F6 | ö | Latin small letter o with diaeresis |
247 | F7 | ÷ | Division sign |
248 | F8 | ø | Latin small letter o with slash |
249 | F9 | ù | Latin small letter u with grave |
250 | FA | ú | Latin small letter u with acute |
251 | FB | û | Latin small letter u with circumflex |
252 | FC | ü | Latin small letter u with diaeresis |
253 | FD | ý | Latin small letter y with acute |
254 | FE | þ | Latin small letter thorn |
255 | FF | ÿ | Latin small letter y with diaeresis |