This document summarizes a presentation about new features in InterBase XE7 from Embarcadero Technologies. It discusses how Change Views provides a new subscription-based model for tracking data changes in the database at the field level with high scalability and low overhead. Traditional methods like triggers and date fields are less efficient for tracking multiple simultaneous updates. Change Views allow multiple users and devices to subscribe to the same data change notifications across connections.

1. EMBARCADERO)TECHNOLOGIES)
InterBase)XE7)&)
Keeping)up)dated)when)data)
changes)in)the)database)
EMBARCADERO)TECHNOLOGIES)
Speaker)
Stephen'Ball'MBCS'CITP'BA(Hons)''
Sales)Consultant)RAD)&))
Associate)Product)Manager)(InterBase)'
'
Stephen.Ball@embarcadero.com'
h=p://DelphiABall.co.uk''
@DelphiABall'
'

2. EMBARCADERO)TECHNOLOGIES)
Recent)InterBase)InnovaKons)
• Dynamic'SQL'in'Stored'Procedures'
• OpHmized'large'object'handling''
– Larger'database'support'
• Security'and'EncrypHon'updates'
• 64bit'ODBC'driver,'JDBC'driver'updates'
• Fast'database'sweep'
• Database'plaTorm'portability''
– Windows,'Linux,'Mac,'iOS,'Android'
• Free'ediHon'W'IBLite'3'
EMBARCADERO)TECHNOLOGIES)
• Change'Views™'
• 64bit'TransacHon'IDs''
• 10K'transacHons/min='150+'
years'running'
• Updates'to'Performance'Monitor'
• 64bit'Linux'
• New'W'Ubuntu'14'
• RHEL'6'&'7'
• SUSE'11'
• OpenSSL'updated'to'1.0.1i''
'
New)in)InterBase)XE7)
• Speed'improvements'
– S.M.P.'and'Index'Manager'
• ParHal'Index'Intelligence'
• “DisHnguished”'Data'Dumps''
• Services'API''
– Journaling'and'Online'Dumps'
• Restore'to'older'versions'
– for'older'development'systems'

3. EMBARCADERO)TECHNOLOGIES)
HOW)CHANGES)HAVE)
HISTORICALLY)BEEN)TRACKED?)
5'
EMBARCADERO)TECHNOLOGIES)
Triggers)&)Date)Field)Tracking)
Triggers)
• High'“cost”'at'run'Hme''
• Verbose'database'logs'
• Hard'to'query'what'is'changed'
– MulHple'changes'='mulHple'log'
records'/'acHons'on'the'same'
data'
• Suited'to'small'scale'
synchronisaHon'/'replicaHon'
only'
Date)Fields)
• Verbose'database'tables'
• Increased'disk'usage'
• Complex'management'
• Simultaneous'updates'can'
lead'to'date'stamp'conflicts'
• Risks'around'date'being'wrong'
• Hard'to'idenHfy'what'you'
knew'about'

4. EMBARCADERO)TECHNOLOGIES)
CHANGE)VIEWS)
It'should'be'easier…'
7'
EMBARCADERO)TECHNOLOGIES)
What)are)Change)Views?)
• A'new'“subscripHon'based”'model'to'“subscribe”'to'
data'and'idenHfy'what'data'has'changed'in'the'DB'
• SubscripHons'can'run'both'
– During'a'connecHon'
– Spanning'connecHons'and'Hme'
• Each'subscriber'can'have'mulHple'devices'subscribed'
to'the'same'data'

5. EMBARCADERO)TECHNOLOGIES)
TradiKonal)Data)Briefcase)
Central'DB'Client'Cache'
''Change'
Time'
4) 4)
5) 5) 5)
Virtual'field'packets'sent:'4'+'4'+'5'+'5'+'5'='23'
EMBARCADERO)TECHNOLOGIES)
Using)Change)Views)
Central'DB'Client'Cache'
''Change'
Time'
Virtual'field'packets'sent:'4'+'1'+'2'+'1'+'1'='9'
4)
1)
2)
1)
1)

6. EMBARCADERO)TECHNOLOGIES)
Change)Views)–)How)They)Work)
• SubscripHons'
– Are'Hed'to'specific'data'that'allows'you'to'idenHfy'at'a'column'level'
what'data'has'been'changed'
– Can'be'any'mix'of'tables/columns'
– Don’t'report'back'your'changes,'only'what'others'have'changed'
– Run'across'connecHons'/'no'need'to'stay'connected)
• MulHple'users'and'devices'
– MulHple'users'can'subscribe'to'the'same'subscripHon'configuraHon'
– Each'user'can'subscribe'mulHple'independent'devices'
EMBARCADERO)TECHNOLOGIES)
Change)Views)are)different!)
• Have:'
– Near'zero'footprint'on'DB'
– Field'Level'Granularity'
– High'Scalability'
– Tight'security'control'
– FireDAC'&'IBX'integraHon'
• Are:''
– Fast'&'easy'to'implement'
– SQL'QueryWable'
– MulHWuser'/'thread'safe'
• Say'good'bye'to:'
– TimeWstamp'tracking'fields'
– Table'locking'for'updates'
– Triggers'upon'triggers'
– Table'structure'changes'
– Log'tables'that'verbose'your'DB'
18'

7. EMBARCADERO)TECHNOLOGIES)
FireDAC)and)InterBase)XE7)ChangeViews)
• New'FireDAC'datasets'method'MergeDataSet'
EMBARCADERO)TECHNOLOGIES)
InterBase)–)EdiKons)
1. Server)EdiKon)
– 1'to'unlimited'connecHons'
2. Desktop'EdiHon'
– Same'as'server,'but'local'
connecHons'only.'
3. ToGo)EdiKon)
– Embedded'version'
4. IBLite'EdiHon'
– Feature'limited'version'of'ToGo'
• 100mb'on'disk''
• No'inbuilt'encrypHon'/'Change'Views'
• Single'thread'connecHon'
1. Free)90)day)Server)trial)
– Full'featured'server'ediHon''
– 20'users'/'80'connecHons'
3. ToGo)EdiKon)
– Embedded'Version'
'
1. Developer)EdiKon)
– 20'users'/'80'connecHons'
– Weak'encrypHon'only'
– TimeWlimited'connecHon'
1,3'''SDK'Pack)
– Full'featured'licenses''
– TimeWlimited'(Similar'to'trial)'
INSTALLED'LIBRARY'
TRIAL'DEVELOPMENT'