local vs. client/server databases - wordpress.com · data integrity in client/server databases...
TRANSCRIPT
![Page 1: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/1.jpg)
Local vs. Client/Server
Databases
Ted Blue
![Page 2: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/2.jpg)
Web Apps are Client/Server
Web Brow ser
(Client)
Web Server
Request
(HTTP)
![Page 3: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/3.jpg)
Web Apps are Client/Server
Web Brow ser
(Client)
Web Server
Request
(HTTP)
Template
(*.cfm)
ColdFusion
Application
Server
Request
(.CFM)
![Page 4: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/4.jpg)
Web Apps are Client/Server
Web Brow ser
(Client)
Web Server
Request
(HTTP)
Template
(*.cfm)
ColdFusion
Application
Server
Request
(.CFM)
Data
![Page 5: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/5.jpg)
Web Apps are Client/Server
Web Brow ser
(Client)
Web Server
Request
(HTTP)
Template
(*.cfm)
ColdFusion
Application
Server
Request
(.CFM)
Data
Response
(HTML)
![Page 6: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/6.jpg)
Web Apps are Client/Server
Web Brow ser
(Client)
Web Server
Request
(HTTP)
Template
(*.cfm)
ColdFusion
Application
Server
Request
(.CFM)
Data
Response
(HTML)Response
(HTML)
![Page 7: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/7.jpg)
Local Databases
dBASE, FoxPro, Paradox, Microsoft Access
![Page 8: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/8.jpg)
Local Databases
dBASE, FoxPro, Paradox, Microsoft Access
No Database Management System
![Page 9: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/9.jpg)
Local Databases
dBASE, FoxPro, Paradox, Microsoft Access
No Database Management System
Minimal Setup and Configuration
![Page 10: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/10.jpg)
Local Databases
dBASE, FoxPro, Paradox, Microsoft Access
No Database Management System
Minimal Setup and Configuration
Low Cost
![Page 11: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/11.jpg)
Performance of Local
Databases
Unable to perform under load
![Page 12: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/12.jpg)
Performance of Local
Databases
Unable to perform under load
Unable to handle large datasets
![Page 13: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/13.jpg)
Performance of Local
DatabasesP
erf
orm
ance
Database Size and/or Number of Users
![Page 14: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/14.jpg)
Performance of Local
Databases
Load limits:
– About 10-20 users maximum
![Page 15: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/15.jpg)
Performance of Local
Databases
Load limits:
– About 10-20 users maximum
Dataset size limits:
– About 100-500k records maximum and/or
– About 1-5MB total size
![Page 16: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/16.jpg)
Performance of Local
Databases
Load limits:
– About 10-20 users maximum
Dataset size limits:
– About 100-500k records maximum and/or
– About 1-5MB total size
Cannot be improved with hardware
![Page 17: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/17.jpg)
Data Integrity and Local
Databases
Easily corrupted
![Page 18: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/18.jpg)
Data Integrity and Local
Databases
Easily corrupted
– Corruption amplified under load
– Memo fields sensitive to corruption
![Page 19: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/19.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
![Page 20: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/20.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
– Relies on active connection to data
– Not possible in client/server web applications
![Page 21: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/21.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
Unmanaged indexes
![Page 22: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/22.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
Unmanaged indexes
– Indexes corrupt during modifications
– …Corrupt indexes cause invalid data retrieval
– …Invalid data retrieval damages data integrity
![Page 23: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/23.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
Unmanaged indexes
Concurrency
![Page 24: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/24.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
Unmanaged indexes
Concurrency
– Multiple users can update same data
– Concurrency problems do not generate errors
![Page 25: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/25.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
Unmanaged indexes
Concurrency
Transaction control
![Page 26: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/26.jpg)
Data Integrity and Local
Databases
Easily corrupted
Pessimistic record locking
Unmanaged indexes
Concurrency
Transaction control
– No simultaneous commit
– No rollback capability
![Page 27: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/27.jpg)
Client/Server Databases
Oracle, Sybase, SQL Server, Informix, etc.
![Page 28: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/28.jpg)
Client/Server Databases
Oracle, Sybase, SQL Server, Informix, etc.
Database Management Systems (DBMS)
![Page 29: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/29.jpg)
Client/Server Databases
Oracle, Sybase, SQL Server, Informix, etc.
Database Management Systems (DBMS)
More elaborate Setup and Configuration
![Page 30: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/30.jpg)
Client/Server Databases
Oracle, Sybase, SQL Server, Informix, etc.
Database Management Systems (DBMS)
More elaborate Setup and Configuration
Higher Cost
![Page 31: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/31.jpg)
Performance in Client/Server
Databases
Excellent performance under load
![Page 32: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/32.jpg)
Performance in Client/Server
Databases
Excellent performance under load
Designed to handle large datasets
![Page 33: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/33.jpg)
Performance in Client/Server
DatabasesP
erf
orm
ance
Database Size and/or Number of Users
![Page 34: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/34.jpg)
Performance in Client/Server
vs. Local Databases P
erf
orm
ance
Database Size and/or Number of Users
![Page 35: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/35.jpg)
Performance in Client/Server
Databases
Load limits:
– Hundreds or Thousands of Users
![Page 36: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/36.jpg)
Performance in Client/Server
Databases
Load limits:
– Hundreds or Thousands of Users
Database size limits:
– Millions of records
– Size limited only by available storage
![Page 37: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/37.jpg)
Performance in Client/Server
Databases
Load limits:
– Hundreds or Thousands of Users
Database size limits:
– Millions of records
– Size limited only by available storage
Scaleable with hardware
![Page 38: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/38.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
![Page 39: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/39.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
– Detects and corrects corruption dynamically
– Prevents corruption automatically
![Page 40: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/40.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
Optimistic Record Locking
– Locks occur during updates
– Manages record lock conflicts
– Perfectly suited to web applications
![Page 41: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/41.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
Optimistic Record Locking
Managed Indexes
– Indexes created as needed
– Automatic corruption detection and correction
– Accurate data retrieval
![Page 42: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/42.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
Optimistic Record Locking
Managed Indexes
Concurrency Control
![Page 43: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/43.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
Optimistic Record Locking
Managed Indexes
Concurrency Control
– Queues updates from multiple users
– Concurrency problems generate errors
– Invalid data not allowed into database
![Page 44: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/44.jpg)
Data Integrity in Client/Server
Databases
Corruption Management
Optimistic Record Locking
Managed Indexes
Concurrency Control
Transaction Control
![Page 45: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/45.jpg)
Data Integrity in Client/Server
Databases Corruption Management
Optimistic Record Locking
Managed Indexes
Concurrency Control
Transaction Control
– Transaction Log tracks all changes by all users
– Commits multiple changes simultaneously
– Rollback for incomplete or inaccurate updates
![Page 46: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/46.jpg)
Additional Client/Server
Database Features
Disaster Recovery
![Page 47: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/47.jpg)
Additional Client/Server
Database Features
Disaster Recovery
Security
![Page 48: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/48.jpg)
Additional Client/Server
Database Features
Disaster Recovery
Security
Views
![Page 49: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/49.jpg)
Additional Client/Server
Database Features
Disaster Recovery
Security
Views
Stored Procedures
![Page 50: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/50.jpg)
Additional Client/Server
Database Features
Disaster Recovery
Security
Views
Stored Procedures
Triggers
![Page 51: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/51.jpg)
Additional Client/Server
Database Features
Disaster Recovery
Security
Views
Stored Procedures
Triggers
Replication
![Page 52: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/52.jpg)
Additional Client/Server
Database Features
Disaster Recovery
Security
Views
Stored Procedures
Triggers
Replication
Advanced SQL Processing
![Page 53: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/53.jpg)
Cost and Implementation
Local Databases
Low Cost
Client/Server Databases
Higher Cost
![Page 54: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/54.jpg)
Cost and Implementation
Local Databases
Low Cost
No Licensing Fees
Client/Server Databases
Higher Cost
Licensed Per User
![Page 55: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/55.jpg)
Cost and Implementation
Local Databases
Low Cost
No Licensing Fees
Minimal Setup and
Configuration
Client/Server Databases
Higher Cost
Licensed Per User
Configuration can be
complex
![Page 56: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/56.jpg)
Cost and Implementation
Local Databases
Low Cost
No Licensing Fees
Minimal Setup and
Configuration
Minimal maintenance
Client/Server Databases
Higher Cost
Licensed Per User
Configuration can be
complex
May require DBA
![Page 57: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/57.jpg)
Making a Choice
Local Databases
Small databases
Client/Server Databases
Medium/Large Databases
![Page 58: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/58.jpg)
Making a Choice
Local Databases
Small databases
Minimal Traffic
Client/Server Databases
Medium/Large Databases
Moderate or High Traffic
![Page 59: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/59.jpg)
Making a Choice
Local Databases
Small databases
Minimal Traffic
Read-only Data
Client/Server Databases
Medium/Large Databases
Moderate or High Traffic
Updateable Data
![Page 60: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/60.jpg)
Making a Choice
Local Databases
Small databases
Minimal Traffic
Read-only Data
No Transactions
Client/Server Databases
Medium/Large Databases
Moderate or High Traffic
Updateable Data
Transaction-based Sites
![Page 61: Local vs. Client/Server Databases - WordPress.com · Data Integrity in Client/Server Databases Corruption Management Optimistic Record Locking Managed Indexes Concurrency Control](https://reader030.vdocument.in/reader030/viewer/2022040411/5ed6b4dfcaf45b18673a58b4/html5/thumbnails/61.jpg)
Choose Wisely…