Today, the customer visited (Japanese) and asked me the difference between DB2 and Oracle. Because it's not a DBA, I haven't really summed it up. But my first feeling: One is instance, one is database. Building Ora libraries and DB2 libraries is not
The command-line processor is the DB2 interface, which best embodies the power of DB2, as well as the simplicity and versatility of DB2. The author makes a detailed exposition of it through examples.0 Reviews:Blair Adamache, DB2 technology
Reposted from: longtang Bay
1.1.1 obtain the first N records
SQL Server: Select Top N * From xtable
ORACLE: Select * From xtable where rownum
DB2: Select * From xtable fetch first n rows only
1.1.2 obtain the current date
SQL Server: Select getdate
Hchao, a moderator of the IBMDB2 database Professional Forum, once published a blog post to help DB2DBA avoid performance disasters and achieve high performance. I have summarized a fault diagnosis process for our customers, users, and DB2 experts.
For helpDB2DBA avoids performance disasters and achieves high performance. I have summarized a fault diagnosis process for our customers, users, and DB2 experts. The following describes in detail the 10 most important performance improvement
Comparison of concurrency control (LOCK) between DB2 and Oracle
Comparison of concurrency control (LOCK) between DB2 and Oracle
1 Introduction
The minimal recovery and transaction units in relational databases (DB2, Oracle, Sybase, Informix, and
1 Introduction
The minimal recovery and transaction units in relational databases (DB2, Oracle, Sybase, Informix, and SQL Server) are a transaction (Transactions). Transactions are ACID (atomicity, consistency, isolation, and durability) feature. In
1 Introduction
In relational databases (Db2,oracle,sybase,informix and SQL Server) the smallest recovery and transaction units are one transaction (transactions), and transactions have acid (atomicity, consistency, isolation, and permanence)
: Network Disk DownloadIntroduction DB2 database is the core product of IBM's relational database, and it is widely used both domestically and globally. For DB2 beginners, the "Step DB2:DBA system Management, operation and application case"
I feel that the answers to many basic questions can be obtained through the help of DB2, because DB2 itself has very detailed help information after installation, so I think it is necessary to summarize how to get help from the DB2 command syntax!
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