Interested to Buy Any Domain ? << Click Here >> for more details...
What are the different types of replication? How are they used?
- 3 Answers
- 13143 Views
- I also Faced
- E-Mail Answers
Answer Posted / suguk
The are three types Replication are
*Unidirectional*Bidirectional*Peer-Peer
*unidirectionalReplication
Transactions that occur at a source table are replicated
over WebSphere® MQ queues to a target table or are passed
as input parameters to a stored procedure to manipulate the
data.
Transactions that occur at the target table are not
replicated back to the source table.
The target table typically is read only or is not updated
by applications other than the Q Apply program.
*Bidirectional
Number of replication queue maps
Between each pair of servers that participate in
bidirectional replication, you need two replication queue
maps. For example, if you have two servers named SERVER_RED
and SERVER_GREEN, you need two replication queue maps:
One to identify the WebSphere® MQ queues that transport
data from SERVER_RED to SERVER_GREEN
One to identify the WebSphere MQ queues that transport data
from SERVER_GREEN to SERVER_RED
Number of Q subscriptions
For every logical table that is replicated in bidirectional
replication, you need a pair of Q subscriptions between the
two servers. For example, if you have two servers named
SERVER_RED and SERVER_GREEN, then two Q subscriptions are
built for you:
One from the source table on SERVER_RED to the target table
on SERVER_GREEN
One from the source table on SERVER_GREEN to the target
table SERVER_RED.
*Peer-peer
Peer-to-Peer applications are defined as programs which
allow computers to share data in the form of music, movies,
games or any computer file or software over a local network
and the Internet. Fordham University does not, at this
time, prohibit and does not block the use of peer-to-peer
applications on any part of its network. The University
understands that there are legitimate academic uses for
such applications. However, use of these applications has
been known to cause problems, which can affect the entire
University community.
| Is This Answer Correct ? | 2 Yes | 5 No |
Post New Answer View All Answers
ow to bring suspect mode datbase online from scratch
Do you know spatial data types - geometry and geography in sql server 2008?
How to delete existing rows in a table?
What is the difference between implicit and explicit transaction?
Explain the dirty pages?
What is a DBMS, query, SQL?
What is log cache in sql server?
Does index speed up select statements?
Explain the difference between primary keys and foreign keys?
How to create a view with data from multiple tables?
While migrating Microsoft SQL Server 2008 database to SQL Azure, what can be done to ensure the database connectivity does not degrade?
How many types of relations are there between dimension and measure group? : sql server analysis services, ssas
What will be the value of @@fetch_status if a row that was a part of the cursor resultset has been deleted from the database after the time the stored procedure that opened the cursor was executed?
what is nonclustered index
What is a natural primary key?
