Transaction Log and Associated process

1. TRANSACTION LOG
Recovery
Model
Full
Bulk Logg
Simple
Control
Backup
Plan
Point-in-Time
Check Point
Truncate
Policy
Type
Automatic
Indirect
Manual
Internal
VLF
Active Portion
VLF Reusable
Data Access
Concurrency
Type
Pessimistics
Optimistics Effects
Lost Update
Repeatable Read
Phantom Read
Missing & Double Read
Type
Start Tran
Explicit Tran
Auto commit
Implicit Tran
Batch scope
A.) Prepare
B.) Commit
End Tran
Commit Tran
Rollback Tran
TRANSACTION
LOCKING
MECHANISM
Lock Manager
Lock Mode
1 SHARED
2 UPDATE
3 EXCLUSIVE
4 INTENT
5 SCHEMA
6 BULK UPDATE
7 KEY-RANGE
Lock Level
1 RID heap row
2 KEY
3 PAGE
4 EXTENT
5 HoBT
6 TABLE
7 FILE
8 APPLICATION
9 METADATA
10 ALLOCATION UNIT
11 DATAB ASE
Row Versioning
Isolation Level
Temp db
Space Used
In Temp db
In Data Row
In Large Object
Behavior
In Reading Date
In Modify Data
Features
Trigger
Multiple Active Result Set
Online Index
Dynamic Lock, Blocking & Dead lock
Schema Lock ,Bulk Update Lock
Key Range Lock , Lock Partition
ACID

2. Transactions are at the heart of concurrency.
concurrency enhancements in SQL Server 2005. On the server side, it covers all the
features of SQL Server that leverage RLV technology. These include the new features:
Snapshot Isolation, Multiple Active Result Sets (MARS) and Online Index Rebuild