← #17951850
Subgroups — #17951850
Order 4352.
418 conjugacy classes of subgroups.
The subgroup lattice has 344 nodes — too large to display as a diagram.
Conjugacy classes of subgroups
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|
| 1 | C4×#10587545 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | #14544026 | C2 | 1 | 1 | yes | maximal, characteristic |
| 3 | #14543993 | C2 | 1 | 1 | yes | maximal, characteristic |
| 4 | C8×#63247 | C2 | 1 | 1 | yes | maximal, characteristic |
| 5 | #14543629 | C2 | 1 | 1 | yes | maximal, characteristic |
| 6 | #14543629 | C2 | 1 | 1 | yes | maximal, characteristic |
| 7 | C2×#11762938 | C2 | 1 | 1 | yes | maximal, characteristic |
| 8 | #11763826 | C22 | 1 | 1 | yes | characteristic |
| 9 | #11763826 | C22 | 1 | 1 | yes | characteristic |
| 10 | C2×#10587545 | C4 | 1 | 2 | yes | — |
| 11 | C4×#63247 | C22 | 1 | 1 | yes | characteristic |
| 12 | C4×#63247 | C22 | 1 | 1 | yes | characteristic |
| 13 | #11763689 | C4 | 1 | 2 | yes | — |
| 14 | #11763655 | C4 | 1 | 2 | yes | — |
| 15 | #11763654 | C4 | 1 | 2 | yes | — |
| 16 | #11763651 | — | 2 | 1 | no | — |
| 17 | #11763651 | — | 2 | 1 | no | — |
| 18 | #11763650 | — | 2 | 1 | no | — |
| 19 | C8×#3624 | — | 2 | 1 | no | — |
| 20 | C2×C4×Dic34 | C22 | 1 | 1 | yes | characteristic |
| 21 | #11762938 | — | 2 | 1 | no | — |
| 22 | #11762938 | — | 2 | 1 | no | — |
| 23 | #11762938 | — | 2 | 1 | no | — |
| 24 | #11762938 | — | 2 | 1 | no | — |
| 25 | C2×#10587485 | C4 | 1 | 1 | yes | characteristic |
| 26 | C2×#10587485 | C22 | 1 | 1 | yes | characteristic |
| 27 | C2×#10587474 | C4 | 1 | 1 | yes | characteristic |
| 28 | C2×#10587486 | C4 | 1 | 1 | yes | characteristic |
| 29 | C2×C8×Dic17 | C22 | 1 | 1 | yes | characteristic |
| 30 | C2×C17×C4⋊C8 | C4 | 1 | 1 | yes | characteristic |
| 31 | C22×Dic34 | C2×C4 | 1 | 1 | yes | characteristic |
| 32 | C2×#63247 | C2×C4 | 1 | 2 | yes | — |
| 33 | C2×#63247 | C2×C4 | 1 | 2 | yes | — |
| 34 | C22×C8×C17 | C2×C4 | 1 | 1 | yes | characteristic |
| 35 | C22×C8×C17 | C2×C4 | 1 | 1 | yes | characteristic |
| 36 | C2×C42×C17 | C2×C4 | 1 | 1 | yes | characteristic |
| 37 | C2×C4⋊Dic17 | C2×C4 | 1 | 1 | yes | characteristic |
| 38 | C2×#63225 | C2×C4 | 1 | 1 | yes | characteristic |
| 39 | C2×#63225 | C2×C4 | 1 | 1 | yes | characteristic |
| 40 | C2×C4×Dic17 | C2×C4 | 1 | 1 | yes | characteristic |
| 41 | C2×C4×Dic17 | C23 | 1 | 1 | yes | characteristic |
| 42 | C22×#3622 | C2×C4 | 1 | 1 | yes | characteristic |
| 43 | C22×#3622 | C2×C4 | 1 | 1 | yes | characteristic |
| 44 | C4×Dic34 | — | 2 | 1 | no | — |
| 45 | C4×Dic34 | — | 2 | 1 | no | — |
| 46 | C4×Dic34 | — | 2 | 1 | no | — |
| 47 | C4×Dic34 | — | 2 | 1 | no | — |
| 48 | C22⋊#3624 | C2×C4 | 1 | 2 | yes | — |
| 49 | C22⋊#3624 | C2×C4 | 1 | 2 | yes | — |
| 50 | #10587545 | — | 2 | 4 | no | — |
| 51 | #10587544 | — | 2 | 1 | no | — |
| 52 | #10587544 | — | 2 | 1 | no | — |
| 53 | #10587542 | — | 2 | 1 | no | — |
| 54 | #10587542 | — | 2 | 1 | no | — |
| 55 | C4×#3624 | — | 2 | 1 | no | — |
| 56 | C4×#3624 | — | 2 | 1 | no | — |
| 57 | C4×#3624 | — | 2 | 1 | no | — |
| 58 | C4×#3624 | — | 2 | 1 | no | — |
| 59 | C17×C4⋊C8 | — | 2 | 1 | no | — |
| 60 | C17×C4⋊C8 | — | 2 | 1 | no | — |
| 61 | #10587486 | — | 2 | 1 | no | — |
| 62 | #10587486 | — | 2 | 1 | no | — |
| 63 | #10587485 | — | 2 | 1 | no | — |
| 64 | #10587485 | — | 2 | 1 | no | — |
| 65 | #10587485 | — | 2 | 1 | no | — |
| 66 | #10587485 | — | 2 | 1 | no | — |
| 67 | C8×Dic17 | D4 | 1 | 1 | yes | characteristic |
| 68 | C8×Dic17 | D4 | 1 | 1 | yes | characteristic |
| 69 | C8×Dic17 | D4 | 1 | 1 | yes | characteristic |
| 70 | C8×Dic17 | D4 | 1 | 1 | yes | characteristic |
| 71 | #10587474 | — | 2 | 1 | no | — |
| 72 | #10587474 | — | 2 | 1 | no | — |
| 73 | C22×C4×C17 | C42 | 1 | 1 | yes | characteristic |
| 74 | C22×C4×C17 | C42 | 1 | 1 | yes | characteristic |
| 75 | C22×C4×C17 | C22×C4 | 1 | 1 | yes | characteristic |
| 76 | C22×Dic17 | C42 | 1 | 1 | yes | characteristic |
| 77 | C22×Dic17 | C42 | 1 | 1 | yes | characteristic |
| 78 | C22×Dic17 | C22×C4 | 1 | 1 | yes | characteristic |
| 79 | C22×Dic17 | C22×C4 | 1 | 1 | yes | characteristic |
| 80 | C2×Dic34 | — | 2 | 1 | no | — |
| 81 | C2×Dic34 | — | 2 | 1 | no | — |
| 82 | C2×Dic34 | — | 2 | 2 | no | — |
| 83 | C2×Dic34 | — | 2 | 2 | no | — |
| 84 | #63247 | — | 2 | 2 | no | — |
| 85 | #63247 | — | 2 | 2 | no | — |
| 86 | #63247 | — | 2 | 2 | no | — |
| 87 | #63247 | M16 | 1 | 4 | yes | — |
| 88 | C2×#3624 | — | 2 | 2 | no | — |
| 89 | C2×#3624 | — | 2 | 2 | no | — |
| 90 | C2×#3624 | — | 2 | 2 | no | — |
| 91 | C2×#3624 | — | 2 | 2 | no | — |
| 92 | C2×C8×C17 | — | 2 | 1 | no | — |
| 93 | C2×C8×C17 | — | 4 | 1 | no | — |
| 94 | C2×C8×C17 | — | 4 | 1 | no | — |
| 95 | C2×C8×C17 | C22⋊C4 | 1 | 1 | yes | characteristic |
| 96 | C2×C8×C17 | C22⋊C4 | 1 | 1 | yes | characteristic |
| 97 | C42×C17 | — | 2 | 1 | no | — |
| 98 | C42×C17 | — | 2 | 1 | no | — |
| 99 | C4⋊Dic17 | — | 2 | 1 | no | — |
| 100 | C4⋊Dic17 | — | 2 | 1 | no | — |
| 101 | #63225 | — | 2 | 1 | no | — |
| 102 | #63225 | — | 2 | 1 | no | — |
| 103 | #63225 | — | 2 | 1 | no | — |
| 104 | #63225 | — | 2 | 1 | no | — |
| 105 | C4×Dic17 | — | 2 | 1 | no | — |
| 106 | C4×Dic17 | — | 2 | 1 | no | — |
| 107 | C4×Dic17 | C2×D4 | 1 | 1 | yes | characteristic |
| 108 | C4×Dic17 | C2×D4 | 1 | 1 | yes | characteristic |
| 109 | C4×Dic17 | #41 | 1 | 1 | yes | characteristic |
| 110 | C4×Dic17 | #41 | 1 | 1 | yes | characteristic |
| 111 | C2×#3622 | — | 2 | 2 | no | — |
| 112 | C2×#3622 | — | 2 | 1 | no | — |
| 113 | C2×#3622 | — | 4 | 1 | no | — |
| 114 | C2×#3622 | C22⋊C4 | 1 | 1 | yes | characteristic |
| 115 | C2×#3622 | C22⋊C4 | 1 | 1 | yes | characteristic |
| 116 | #8167 | — | 17 | 1 | no | maximal, Sylow |
| 117 | C23×C17 | C2×C42 | 1 | 1 | yes | characteristic |
| 118 | C2×C4×C17 | — | 2 | 1 | no | — |
| 119 | C2×C4×C17 | — | 2 | 1 | no | — |
| 120 | C2×C4×C17 | — | 2 | 1 | no | — |
| 121 | C2×C4×C17 | — | 2 | 1 | no | — |
| 122 | C2×C4×C17 | — | 2 | 1 | no | — |
| 123 | C2×C4×C17 | — | 2 | 1 | no | — |
| 124 | C2×C4×C17 | — | 4 | 1 | no | — |
| 125 | C2×C4×C17 | C2×C22⋊C4 | 1 | 1 | yes | characteristic |
| 126 | C2×C4×C17 | #117 | 1 | 1 | yes | characteristic |
| 127 | C2×Dic17 | — | 2 | 1 | no | — |
| 128 | C2×Dic17 | — | 2 | 1 | no | — |
| 129 | C2×Dic17 | — | 2 | 1 | no | — |
| 130 | C2×Dic17 | — | 2 | 1 | no | — |
| 131 | C2×Dic17 | — | 4 | 1 | no | — |
| 132 | C2×Dic17 | — | 4 | 1 | no | — |
| 133 | C2×Dic17 | C4×D4 | 1 | 1 | yes | characteristic |
| 134 | C2×Dic17 | C4×D4 | 1 | 1 | yes | characteristic |
| 135 | C2×Dic17 | C4×D4 | 1 | 1 | yes | characteristic |
| 136 | C2×Dic17 | C4×D4 | 1 | 1 | yes | characteristic |
| 137 | C2×Dic17 | C2×M16 | 1 | 2 | yes | — |
| 138 | C2×Dic17 | #131 | 1 | 2 | yes | — |
| 139 | Dic34 | — | 4 | 2 | no | — |
| 140 | Dic34 | — | 4 | 2 | no | — |
| 141 | #3624 | — | 2 | 4 | no | — |
| 142 | #3624 | — | 4 | 2 | no | — |
| 143 | #3624 | — | 4 | 2 | no | — |
| 144 | #3624 | — | 4 | 2 | no | — |
| 145 | C8×C17 | — | 2 | 1 | no | — |
| 146 | C8×C17 | — | 2 | 1 | no | — |
| 147 | C8×C17 | — | 4 | 1 | no | — |
| 148 | #3622 | — | 2 | 1 | no | — |
| 149 | #3622 | — | 4 | 1 | no | — |
| 150 | #3622 | #101 | 1 | 2 | yes | complemented |
| 151 | C2×#446 | — | 17 | 1 | no | — |
| 152 | C4×#101 | — | 17 | 1 | no | — |
| 153 | #1461 | — | 17 | 1 | no | — |
| 154 | #1451 | — | 17 | 1 | no | — |
| 155 | C8×M16 | — | 17 | 1 | no | — |
| 156 | #1283 | — | 17 | 1 | no | — |
| 157 | #1283 | — | 17 | 1 | no | — |
| 158 | C22×C17 | — | 2 | 1 | no | — |
| 159 | C22×C17 | — | 2 | 1 | no | — |
| 160 | C22×C17 | C4×C22⋊C4 | 1 | 1 | yes | characteristic |
| 161 | C22×C17 | C4×M16 | 1 | 1 | yes | characteristic |
| 162 | C22×C17 | #405 | 1 | 1 | yes | characteristic |
| 163 | C4×C17 | — | 2 | 1 | no | — |
| 164 | C4×C17 | — | 4 | 1 | no | — |
| 165 | C4×C17 | — | 4 | 1 | no | — |
| 166 | C4×C17 | C2×#101 | 1 | 1 | yes | characteristic |
| 167 | C4×C17 | #413 | 1 | 1 | yes | characteristic |
| 168 | Dic17 | — | 2 | 1 | no | — |
| 169 | Dic17 | — | 2 | 1 | no | — |
| 170 | Dic17 | — | 4 | 1 | no | — |
| 171 | Dic17 | — | 4 | 1 | no | — |
| 172 | Dic17 | #435 | 1 | 2 | yes | — |
| 173 | Dic17 | #436 | 1 | 2 | yes | — |
| 174 | C2×C4×Q8 | — | 17 | 1 | no | — |
| 175 | #446 | — | 34 | 1 | no | — |
| 176 | #446 | — | 34 | 1 | no | — |
| 177 | #446 | — | 34 | 1 | no | — |
| 178 | #446 | — | 34 | 1 | no | — |
| 179 | #431 | — | 17 | 1 | no | — |
| 180 | #431 | — | 17 | 1 | no | — |
| 181 | C2×C4⋊C8 | — | 17 | 1 | no | — |
| 182 | C2×C4⋊C8 | — | 17 | 1 | no | — |
| 183 | C2×C4⋊C8 | #595 | 1 | 1 | yes | characteristic |
| 184 | C2×#101 | — | 17 | 2 | no | — |
| 185 | C4×M16 | — | 17 | 1 | no | — |
| 186 | C4×M16 | — | 17 | 1 | no | — |
| 187 | C2×#97 | — | 17 | 1 | no | — |
| 188 | C2×#97 | — | 17 | 1 | no | — |
| 189 | C2×C4×C8 | — | 17 | 1 | no | — |
| 190 | #343 | — | 17 | 2 | no | — |
| 191 | #324 | — | 17 | 2 | no | — |
| 192 | #324 | — | 17 | 2 | no | — |
| 193 | #322 | — | 34 | 1 | no | — |
| 194 | #322 | — | 34 | 1 | no | — |
| 195 | #322 | — | 34 | 1 | no | — |
| 196 | C82 | — | 34 | 1 | no | — |
| 197 | C2×C17 | — | 2 | 1 | no | — |
| 198 | C2×C17 | — | 2 | 1 | no | — |
| 199 | C2×C17 | #1753 | 1 | 1 | yes | characteristic |
| 200 | C2×C17 | C4×#101 | 1 | 1 | yes | characteristic |
| 201 | C2×C17 | #1757 | 1 | 1 | yes | characteristic |
| 202 | C22×Q8 | — | 17 | 1 | no | — |
| 203 | C2×M16 | — | 17 | 2 | no | — |
| 204 | C2×M16 | — | 17 | 2 | no | — |
| 205 | C22×C8 | — | 17 | 1 | no | — |
| 206 | C22×C8 | — | 17 | 1 | no | — |
| 207 | C22×C8 | C2×#595 | 1 | 1 | yes | characteristic |
| 208 | C22×C8 | C2×#595 | 1 | 1 | yes | characteristic |
| 209 | C4×Q8 | — | 34 | 1 | no | — |
| 210 | C4×Q8 | — | 34 | 1 | no | — |
| 211 | C4×Q8 | — | 34 | 1 | no | — |
| 212 | C4×Q8 | — | 34 | 1 | no | — |
| 213 | C2×C4⋊C4 | — | 17 | 1 | no | — |
| 214 | C2×C4⋊C4 | — | 17 | 1 | no | — |
| 215 | C2×C4⋊C4 | — | 17 | 1 | no | — |
| 216 | C2×C42 | — | 17 | 1 | no | — |
| 217 | C2×C42 | — | 17 | 1 | no | — |
| 218 | C2×C42 | C2×#595 | 1 | 1 | yes | characteristic |
| 219 | C4⋊C8 | — | 2 | 1 | no | — |
| 220 | C4⋊C8 | — | 2 | 1 | no | — |
| 221 | C4⋊C8 | — | 34 | 1 | no | — |
| 222 | C4⋊C8 | — | 34 | 1 | no | — |
| 223 | C4⋊C8 | — | 34 | 1 | no | — |
| 224 | C4⋊C8 | — | 34 | 1 | no | — |
| 225 | C4⋊C8 | — | 34 | 1 | no | — |
| 226 | C4⋊C8 | — | 34 | 1 | no | — |
| 227 | #101 | — | 34 | 4 | no | — |
| 228 | C22⋊C8 | — | 17 | 2 | no | — |
| 229 | C22⋊C8 | — | 17 | 2 | no | — |
| 230 | #97 | — | 34 | 1 | no | — |
| 231 | #97 | — | 34 | 1 | no | — |
| 232 | #97 | — | 34 | 1 | no | — |
| 233 | #97 | — | 34 | 1 | no | — |
| 234 | #97 | — | 34 | 1 | no | — |
| 235 | #97 | — | 34 | 1 | no | — |
| 236 | C4×C8 | — | 17 | 1 | no | — |
| 237 | C4×C8 | — | 17 | 1 | no | — |
| 238 | C4×C8 | — | 17 | 1 | no | — |
| 239 | C4×C8 | — | 17 | 1 | no | — |
| 240 | C4×C8 | — | 34 | 1 | no | — |
| 241 | C4×C8 | — | 34 | 1 | no | — |
| 242 | C4×C8 | — | 34 | 1 | no | — |
| 243 | C4×C8 | — | 34 | 1 | no | — |
| 244 | C17 | #8167 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 245 | C2×Q8 | — | 34 | 2 | no | — |
| 246 | C2×Q8 | — | 34 | 1 | no | — |
| 247 | C2×Q8 | — | 34 | 1 | no | — |
| 248 | C2×Q8 | — | 34 | 2 | no | — |
| 249 | C22×C4 | — | 17 | 1 | no | — |
| 250 | C22×C4 | — | 17 | 1 | no | — |
| 251 | C22×C4 | — | 17 | 1 | no | — |
| 252 | C22×C4 | — | 17 | 1 | no | — |
| 253 | C22×C4 | C4×#595 | 1 | 1 | yes | characteristic |
| 254 | C22×C4 | C4×#595 | 1 | 1 | yes | characteristic |
| 255 | C22×C4 | C22×#595 | 1 | 1 | yes | characteristic |
| 256 | M16 | — | 17 | 4 | no | — |
| 257 | M16 | — | 34 | 2 | no | — |
| 258 | M16 | — | 34 | 2 | no | — |
| 259 | M16 | — | 34 | 2 | no | — |
| 260 | C2×C8 | — | 2 | 1 | no | — |
| 261 | C2×C8 | — | 4 | 1 | no | — |
| 262 | C2×C8 | — | 4 | 1 | no | — |
| 263 | C2×C8 | — | 17 | 1 | no | — |
| 264 | C2×C8 | — | 17 | 1 | no | — |
| 265 | C2×C8 | — | 34 | 2 | no | — |
| 266 | C2×C8 | — | 34 | 2 | no | — |
| 267 | C2×C8 | — | 34 | 2 | no | — |
| 268 | C2×C8 | — | 34 | 2 | no | — |
| 269 | C2×C8 | — | 34 | 2 | no | — |
| 270 | C2×C8 | — | 34 | 1 | no | — |
| 271 | C2×C8 | — | 68 | 1 | no | — |
| 272 | C2×C8 | C22⋊#595 | 1 | 1 | yes | characteristic |
| 273 | C2×C8 | C22⋊#595 | 1 | 1 | yes | characteristic |
| 274 | C4⋊C4 | — | 34 | 1 | no | — |
| 275 | C4⋊C4 | — | 34 | 1 | no | — |
| 276 | C4⋊C4 | — | 34 | 1 | no | — |
| 277 | C4⋊C4 | — | 34 | 1 | no | — |
| 278 | C4⋊C4 | — | 34 | 1 | no | — |
| 279 | C4⋊C4 | — | 34 | 1 | no | — |
| 280 | C42 | — | 2 | 1 | no | — |
| 281 | C42 | — | 2 | 1 | no | — |
| 282 | C42 | — | 17 | 1 | no | — |
| 283 | C42 | — | 17 | 1 | no | — |
| 284 | C42 | — | 17 | 1 | no | — |
| 285 | C42 | — | 17 | 1 | no | — |
| 286 | C42 | — | 34 | 1 | no | — |
| 287 | C42 | — | 34 | 1 | no | — |
| 288 | C23 | C2×C4×#595 | 1 | 1 | yes | characteristic |
| 289 | Q8 | — | 68 | 2 | no | — |
| 290 | Q8 | — | 68 | 2 | no | — |
| 291 | C2×C4 | — | 2 | 1 | no | — |
| 292 | C2×C4 | — | 2 | 1 | no | — |
| 293 | C2×C4 | — | 2 | 1 | no | — |
| 294 | C2×C4 | — | 2 | 1 | no | — |
| 295 | C2×C4 | — | 2 | 1 | no | — |
| 296 | C2×C4 | — | 2 | 1 | no | — |
| 297 | C2×C4 | — | 4 | 1 | no | — |
| 298 | C2×C4 | — | 17 | 1 | no | — |
| 299 | C2×C4 | — | 17 | 1 | no | — |
| 300 | C2×C4 | — | 17 | 2 | no | — |
| 301 | C2×C4 | — | 17 | 2 | no | — |
| 302 | C2×C4 | — | 17 | 1 | no | — |
| 303 | C2×C4 | — | 17 | 1 | no | — |
| 304 | C2×C4 | — | 34 | 1 | no | — |
| 305 | C2×C4 | — | 34 | 1 | no | — |
| 306 | C2×C4 | — | 34 | 1 | no | — |
| 307 | C2×C4 | — | 34 | 1 | no | — |
| 308 | C2×C4 | — | 68 | 1 | no | — |
| 309 | C2×C4 | — | 68 | 1 | no | — |
| 310 | C2×C4 | #10587677 | 1 | 1 | yes | characteristic |
| 311 | C2×C4 | C2×C22⋊#595 | 1 | 1 | yes | characteristic |
| 312 | C8 | — | 2 | 1 | no | — |
| 313 | C8 | — | 2 | 1 | no | — |
| 314 | C8 | — | 4 | 1 | no | — |
| 315 | C8 | — | 17 | 2 | no | — |
| 316 | C8 | — | 34 | 4 | no | — |
| 317 | C8 | — | 34 | 1 | no | — |
| 318 | C8 | — | 68 | 2 | no | — |
| 319 | C8 | — | 68 | 2 | no | — |
| 320 | C8 | — | 68 | 2 | no | — |
| 321 | C8 | — | 68 | 1 | no | — |
| 322 | C22 | — | 2 | 1 | no | — |
| 323 | C22 | — | 2 | 1 | no | — |
| 324 | C22 | C4×C22⋊#595 | 1 | 1 | yes | characteristic |
| 325 | C22 | M16×#595 | 1 | 1 | yes | characteristic |
| 326 | C22 | #11763775 | 1 | 1 | yes | characteristic |
| 327 | C4 | — | 2 | 1 | no | — |
| 328 | C4 | — | 4 | 1 | no | — |
| 329 | C4 | — | 4 | 1 | no | — |
| 330 | C4 | — | 17 | 2 | no | — |
| 331 | C4 | — | 17 | 2 | no | — |
| 332 | C4 | — | 34 | 1 | no | — |
| 333 | C4 | — | 34 | 1 | no | — |
| 334 | C4 | — | 68 | 1 | no | — |
| 335 | C4 | — | 68 | 1 | no | — |
| 336 | C4 | D17⋊#101 | 1 | 1 | yes | characteristic |
| 337 | C4 | #11763796 | 1 | 1 | yes | characteristic |
| 338 | C2 | — | 2 | 1 | no | — |
| 339 | C2 | — | 2 | 1 | no | — |
| 340 | C2 | #14544524 | 1 | 1 | yes | characteristic |
| 341 | C2 | #14544537 | 1 | 1 | yes | characteristic |
| 342 | C2 | #14544539 | 1 | 1 | yes | characteristic |
Complements
Splittings G = N ⋊ H with N normal; H ≅ G/N.
Maximal subgroups
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
Finite Group Databasebeta