db2 sequence

Brief introduction Today's applications are often designed for international use. These applications may need to handle strings in different languages. Unicode is a language-independent character representation standard. Because the Java programming language already uses Unicode internally to represent characters, the development of internationalized applications is much easier. However, you cannot consider only the application side. The back-end database must also be able to handle Unicode ch

on each node.4. Restore the database1) manually drop the database to simulate disaster recovery. perform the following operations:Db2 drop db sample2) restore the backup history every time, regardless of the type, the history file will be backed up ). The timestamp here should be the latest:Db2 restore db sample history file use tsm taken at 20030102223107 buffer 1003) use the db2 recovery help tool:Db2ckrst-d sample-t 20030101224424-r databaseComman

There are two methods for batch import of DB2 stored procedures. The following describes the two methods for batch import of DB2 stored procedures in detail. If you are interested in the DB2 stored procedure, take a look. Import command Db2-td! C: \ 1. SQL For the compilation of

The syntax of the DB2 index is the basic knowledge of the DB2 database. The following describes the syntax of the DB2 index in detail, hoping to help you learn the syntax of the DB2 index. CREATE INDEXThe create index statement is used to CREATE an INDEX for the DB2 Everypla

The following articles mainly describe the commands of the DB2 database in the linux operating system, if you are interested in the commands of the DB2 database in the linux operating system, you can click the following article to view the instructions. The following is a detailed introduction of the article. I hope you can learn from it. DB2 database commands 1.

The DB2 tutorial you are looking at is: IBM DB2 Connect Introduction (1). In part 1th of this series, we initially talked about the different programming interfaces provided by DB2 Connect and the drivers that implement those interfaces. In the last few sections, we describe roughly the communication infrastructure provided by

Guidance:In recent years, with the improvement of people's living standard, many people have begun to buy insurance, which also accelerates the rapid development of the insurance industry,Insurance IndustryIt is generally oriented to the public, so the database is in a relatively important position for the insurance industry. It is precisely becauseDB2 databaseThe system has many advantages, so some insurance companies choose the DB2 database system.

This time, our DB2 is deployed on Windows. Windows has a client that is called a graphical interface. But it does not seem to work well, we have some problems, let's solve it. First, add a database instance: Instances of DB2 are independent of each other, and instances can be considered as containers for databases. When the default DB2 is installed, it builds an

= --How do you know the bufferpools situation? DB2 =>select * from SYSCAT. Bufferpools --How do you know how many tables a user has? DB2 =>select * from SYSIBM. Systables WHERE creator= ' USER ' --How do I know the function under the user? DB2 =>select * from IWH. Userfunction DB2 =>sel

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 techniques for using DB2 UDB's e-commerce OLTP applications in Unix, Windows, and OS/2 environments, at the end of this article, we will make a summary.DB2 databaseOfOp

Http://database.51cto.com/art/201108/280742.htm In the Oracle database , what is a sequence ? What it is used for. A sequence (SEQUENCE) is actually a serial number generator that can automatically generate serial numbers for rows in a table, generating a set of equal-interval values (type numbers). Its primary purpose is to generate a primary key value for the

The db2 tutorial is: IBM DB2 Connect introduction (1 ).In part 1 of this series, we initially talked about the different programming interfaces provided by DB2 Connect and the drivers that implement these interfaces. In the last few sections, we roughly describe the communication infrastructure provided by DB2 Connect

The db2 tutorial is: IBM DB2 Connect introduction (1 ). In part 1 of this series, we initially talked about the different programming interfaces provided by DB2 Connect and the drivers that implement these interfaces. In the last few sections, we roughly describe the communication infrastructure provided by DB2 Connec

Label:1. Launch instance (DB2INST1): Db2start 2. Stop the Instance (DB2INST1): Db2stop 3. List all instances (DB2INST1) Db2ilist 3-1. List the current instance: DB2 Get Instance 3-2. List all databases: DB2 List Database Directory 4. Look at the sample configuration file: DB2 Get DBM Cfg|more 5. Update the Database Manager parameter information:

Oracle Oracle does not have the automatic numbering field type in the Acces, so in Oracle to want to use a field to increment automatically, also is troublesome, provides everybody here a method, uses the sequence, to complete the field the automatic increment, below describes how to create the sequence, uses the sequence, and deletes the

Original post http://hi.baidu.com/rich0411/blog/item/fa0c61ee3a68502e2df534bc.html The so-called data movement in DB2 includes: 1. Import Data) 2. Data Export (Export) 3. Load) Both import and load use DB2 commands to save data in files of a certain format to tables in the database.Export refers to saving the data in the table of the DB2 database to a file of a

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 () ORACLE: Select sysdate from dual DB2: Select current timestamp from sysibm. sysdummy1 1.1.3 connection string SQL Server: Select Hello + toone ORACLE: Select

. Create a sequence for the columnUse the keyword generated always as identityCreate table tab_name (id integer generated always as identity (start with 1, increment by 1 ))5. uniqueness constraintsUse the primary key keywordCreate table tab_name (id int not null primary key)Use the keyword uniqueAlter table tab_name add constraint unique (id)Create unique index idx_name on tab_name (id)6. Check ConstraintsUse the keyword checkAlter table books add bo

sequence in the input file. When the CPU_PARALLELISM option is greater than 1 on the SMP symmetric multiprocessor system, this parameter improves the loading performance. 4. Data BufferThis parameter is used to specify the number of 4 K memory pages allocated from the stack. As the internal buffer for loading, specifying a large buffer helps improve the loading performance. 5. CPU_PARALLELISMThis option can only be used on the SMP system and can indi

The so-called data movement in DB2 includes:1. Import Data)2. Data Export (Export)3. Load) Both import and load use DB2 commands to save data in files of a certain format to tables in the database.Export refers to saving the data in the table of the DB2 database to a file of a certain format. The role of data movement: To transfer data between different database