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DifferentielGPS
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MySQL

[root@hooper root]# myisamchk -d -v /var/lib/mysql/dGPS/data.MYI

MyISAM file:         /var/lib/mysql/dGPS/data.MYI
Record format:       Packed
Character set:       latin1_swedish_ci (8)
File-version:        1
Creation time:       2005-04-18 14:42:22
Recover time:        2005-04-18 14:53:17
Status:              open,changed
Data records:              2593928  Deleted blocks:            824325
Datafile parts:            3897923  Deleted data:            60731228
Datafile pointer (bytes):        4  Keyfile pointer (bytes):        4
Datafile length:         271489832  Keyfile length:         168039424
Max datafile length:    4294967294  Max keyfile length: 4398046510079
Recordlength:                  323

table description:
Key Start Len Index   Type                     Rec/key         Root  Blocksize
1   7     4   multip. unsigned long                 14     12647424       1024
2   19    4   multip. long NULL                  48424     26873856       1024
3   43    8   multip. longlong NULL                  9     47569920       1024
4   67    255 multip. char packed stripped NULL     387392     56989696       2048

[root@hooper root]# myisamchk -d -v /var/lib/mysql/dGPS/data.MYI

MyISAM file:         /var/lib/mysql/dGPS/data.MYI
Record format:       Fixed length
Character set:       latin1_swedish_ci (8)
File-version:        1
Creation time:       2005-04-27 15:36:14
Recover time:        2005-04-27 15:58:54
Status:              checked,analyzed
Data records:              2593928  Deleted blocks:                 0
Datafile parts:            2593928  Deleted data:                   0
Datafile pointer (bytes):        4  Keyfile pointer (bytes):        3
Datafile length:         832650888  Keyfile length:          95304704
Max datafile length: 1378684502014  Max keyfile length:   17179868159
Recordlength:                  321

table description:
Key Start Len Index   Type                     Rec/key         Root  Blocksize
1   7     4   multip. unsigned long                 17     21146624       1024
2   19    4   multip. long NULL                  81060     44939264       1024
3   43    8   multip. longlong NULL                  9     79544320       1024
4   67    255 multip. char packed stripped NULL     432321     95302656       2048

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