8/7/2019 TRANSACTIONAL DATA MANAGEMENT
3/5
Transactional Database has the functionality or an important
role required
to maintain consistency and integrity in the database.
Any database transaction (read from database or write into the
database) must be Atomic,Consistent and have Integrity, Durability
popularly called in short as the ACID property of the
database design.
1) A database management system should be able to recover from
any kind of failure during a
transaction automatically like power failures or other
interruptions.
2) A database should provide isolation between transactions
happening concurrently.
Purpose of Transactional Database:
Transactional Database performs a roll back DBMS operation
whenever a WRITE function is
not completed for success. It is very important to maintain
integrity and consistency in thedatabase design, transactional
database achieves the integrity and consistency.
Imagine, you are making shopping a toy for 10 dollars. You
provide your credit card to the
merchant. They swipe the card and your credit card get charged
for the amount, but there is an
issue or power failure in the server where the 10 dollar is not
getting credited to the merchantaccount. The merchant will not be
able to complete the transaction neither he is going to give
you shopped due to this unsuccessful transaction which is only
half way through. You are not
going to get your money back neither you are going to get the
toy which you tried to purchase. It
is going to be a loss for one or other party involved in such
transactions transaction.
Transactional database provides functionality called Roll back
to overcome such losses. Whena transaction did not complete the
roll back statement rolls the database to the state before
beginning of the transaction which failed. This helps to avoid
any kind of loss and lets you startthe transaction again a
fresh.
Transaction Database performs
1) A BEGIN statement to indicate the beginning of the
transaction.
2) A set of SQL statements to indicate the required transaction
to be performed over thedatabase.
3) If the SQL statements fail, the transactional database rolls
back the database to beginning state
else if the SQL statements are successful, A commit statement
would be issued in order to
confirm and complete the transaction.
DATA REPLICATION:
Database replication is the creation and maintenance of multiple
copies of the same database. In
most implementations of database replication, one database
server maintains the master copy of
the database and additional database servers maintain slave
copies of the database. Database
writes are sent to the master database server and are then
replicated by the slave database servers.
8/7/2019 TRANSACTIONAL DATA MANAGEMENT
4/5
Database reads are divided among all of the database servers,
which results in a large
performance advantage due to load sharing. In addition, database
replication can also improve
availability because the slave database servers can be
configured to take over the master role if
the master database server becomes unavailable.
Integration Overview:
Companies need a platform that allows disparate applications and
databasesto benefit from real-time access to real-time
informationwithoutcompromising availability and performance. Golden
Gates TDM platformenables high volumes of transactional data to be
moved continuouslybetween enterprise systems with subsecond speed,
preserved data integrity,and minimum impact.
Golden Gate TDMs major benefits include
Real-time data Continuous availability
Heterogeneous support
High performance with low impact
Flexible solutions
Transaction integrity
Transaction integrity: The degree to which a transaction flowing
through anetwork reaches its intended destination without
impairment of its function,content or meaning.
Integration Details
Golden Gate TDM captures Oracles Siebel data and applies that
data totarget systems with subsecond latency. Because Golden Gate
TDM operatesat the database layer, there is no need for integration
or customization toimplement it with Oracles Siebel Customer
Relationship Management (CRM)7.7. Golden Gate TDM lives
nonintrusively on the source database andcaptures new and changed
data from the transaction (redo) logs. On thetarget, Golden Gate
can Golden Gate solutions for Siebel 7.7 include
Live Reporting:
Golden Gate TDM can offload reporting activity from Siebel
productionsystems to a separate reporting instance (or instances)
by capturing anddelivering real-time Siebel data.
Zero-Downtime Migrations:
http://www.its.bldrdoc.gov/projects/devglossary/_network.htmlhttp://www.its.bldrdoc.gov/projects/devglossary/_network.html
