-
- Preview browser
- Page designer
- DQL editor
- Application wide settings
- Security settings
- Page caching module
- Modules
- Snippets
- Actions
- Context editor
- Task editor
- Scheduler editor
- Search engine editor
- Web server console
- Site layout editor
- Template editor
- Robots editor
- Style definitions
- Database manipulation
- Table designer
- Transfer editor
- Reporter
- Deployment module
- Deployment server settings
- Debugger
- .end
- .form header
- .form trailer
- .items
- assign
- application status
- backup db
- begin transaction
- break
- call menu
- call program
- case
- cluster by
- commit
- connect
- copy all from
- data-entry
- db status
- delete records
- define
- disconnect
- do
- documents
- exec SQL
- else
- end
- enter a record
- error messages off
- error messages on
- exit
- export
- for
- global
- if
- import
- imports
- in
- input using
- install application
- into
- list records
- lock
- lock db
- modify records
- message
- named
- others
- prompt
- query selection
- record entry
- records
- reorganize
- restore db
- rollback
- run procedure
- servers
- temp
- then
- tran off
- tran on
- unclustered
- unlock
- unlock db
- via form
- while
- with
- abs
- acos
- addressof
- ampm
- anylookup
- asin
- atan
- atan2
- ceil
- CHR
- concat
- ConsoleCopy
- ConsoleMemoCopy
- ConsoleShow
- ConsoleWriteToFile
- cos
- cosh
- date
- DatePicker
- day
- DEOS
- DialogOpen
- DialogOpenRelated
- DocumentCloseName
- DoesObjectExist
- ExecDQL
- ExecuteFile
- exp
- FileExecDQL
- firstc
- firstlast
- firstw
- FixedWidth
- floor
- futurevalue
- GetCurrent
- GetVar
- hours
- if
- installment
- jointext
- julian
- lastc
- lastfirst
- lastw
- length
- log
- log10
- lower
- MemoChunk
- MemoCopy
- MemoDecodePair
- MemoExecDQL
- MemoFind
- MemoGetGlobal
- MemoLength
- MemoMemoCopy
- MemoMemoReplace
- MemoReadFromFile
- MemoReplace
- MemoSetGlobal
- MemoStringBetween
- MemoStringFrom
- MemoStringTo
- MemoWordCount
- MemoWriteToFile
- midc
- midw
- minutes
- mod
- month
- OpenForm
- OpenMenu
- OpenProcedure
- OpenReport
- periods
- power
- presentvalue
- proper
- random
- rate
- RefreshForm
- RefreshScreen
- RefreshStatus
- Remote
- Remote authentication
- Remote POP3
- Remote IMAP
- Remote SMTP
- Remote XML
- seconds
- SetColor
- SetCurrent
- SetFocus
- SetLabelText
- SetMemoValue
- SetState
- SetStyle
- SetValue
- SetVar
- sin
- sinh
- spellcurrency
- spelldate
- spellmonth
- spellnumber
- spellweekday
- sqrt
- StringBetween
- StringEscape
- StringFind
- StringFrom
- StringReplace
- StringTo
- tan
- tanh
- textpos
- timeampm
- ToText
- UniqueID
- upper
- Wait
- weekday
- WriteToFile
- year
- yearday
- yearweek
- " (quotation marks)
- () (parentheses)
- + (addition)
- , (comma)
- - (subtraction)
- . (period)
- -- (comment)
- / (division)
- * (multiplication)
- * (asterisk)
- ? (question mark)
- ~ (tilde)
- : (colon)
- := (assignment operator)
- ; (semicolon)
- < (less than)
- <= (less than or equal to)
- = (equals)
- > (greater than)
- >= (greater than or equal to)
- all
- all files
- and
- any
- between
- blank
- count
- count of
- file
- highest of
- in groups
- in groups with group-totals
- in order
- in reverse
- item (Statistical)
- item (Conditional Statistical)
- lock files
- lock nothing
- lock records
- lookup
- lowest of
- max
- mean
- mean of
- min
- not
- number
- numeric string
- or
- pause
- percent
- selected record
- std.dev.
- std.err.
- sum
- sum of
- text
- time
- to
- variance
- window
- Rules for queries
- * (asterisk)
- ? (question mark)
- ~ (tilde)
- and
- or
- not
- ( ) (parentheses)
- Debug querys
- Livetext tags
- xdg3 query
- Sessions
- Pagination
- Free text search
- Intro on fields
- Text
- Hidden
- Date
- Dropdown
- List
- Checkbox
- Radio button
- Text edit
- Redactor (richtext)
- CKEditor
- TinyMCE
- Intro
- hasPrismConnection
- doAction
- doDerivation
- doMenuItem
- doPrismDerivation
- setFormField
- runPrismFunction
- @GetDefinition
- . document
- . listcommands
- . listdocuments
- . listdrives
- . listfiles
- . listfunctions
- . listinternals
- . listoperators
- . listrelated
- . listtables
- . object
- . table
- . testdql
- @SetDefinition
- . document
- . object
- Extra modules intro
- python
- Qt
- wkhtmltopdf
- PySide
- PyXCC
- django
- Apache
- LightTPD
- nginx
- pywin32
- flup
- cssutils
- Pillow
- psutil
- mysqldb
- psycopg2
- pyodbc
- python_dateutil
- requests
- suds-ews
- setuptools
- Whoosh
- wmi
- django-send
- bootstrap
- bootstrapmultiselect
- jquery
- jqueryui
- ckedit
- tinymce
- redactor
- JavaScript EU VAT Number Validation
- feedparser
- beautifulsoup
- appsdir
- six
- pycparser
- pyOpenSSL
- cryptography
- cffi
- enum34
- pyasn1
- idna
- ipaddress
- PyYAML
- coverage
- coveralls
- docopt
- mock
- funcsigs
- pbr
- nose
- paypalrestsdk
- paypal
- libcurl
- 7zipcpp
- cef
- cpp-jwt
lock db
Type
Control CommandPurpose
The lock db command is only functional when using DataEase on a LAN (local area network). This command completely prohibits other users from accessing the current application.Syntax
lock db .Usage
The lock db command can be used to preserve the integrity of data during an extended Control procedure or to prevent a conflict when installing a new or revised application into the application.
The lock db Control command differs from the lock Processing command in several ways:
It locks the whole application rather than specified tables or individual records.
There is no shared option for the lock db command: no other user can view records or access any table in the application for any purpose.
The lock db command is not automatically terminated at the end of the procedure. Once a application is locked by the lock db command, it remains locked until an unlock db command is executed, or the user who initiated the lock db command exits from DataEase.
LAN
On a LAN (local area network), if another user is currently using any resource required by the lock db command, DataEase displays a Resource Conflict message. While this message is displayed, DataEase automatically tries to execute the command at brief intervals.
When the required resource becomes available, DataEase automatically resumes processing and executes the rest of the procedure. See the Record Entry chapter in the User's Guide for more information on resource conflicts and Multi-User Locking Options.Example
lock db .
run procedure "CALCULATE DISCOUNT" .
run procedure "PRINT RESERVATIONS" .
unlock db .
This query tells DataEase: 1) Lock the current application. 2) Run the CALCULATE DISCOUNT procedure. 3) Run the PRINT RESERVATIONS procedure. 4) Unlock the application.