db2 integer data type

Label:When using MySQLdb or SQLAlchemy, you will find that the fields in the table Integer are converted by default for the long type. This behavior is actually done by the DB API, which is all MySQLdb's fault (assuming you're using this API). This is because the range of MySQL unsigned int has exceeded int the upper limit and forced use may cause overflow. But the upper limit of int is above 10 trillion, g

The built-in data types of the DB2 database are mainly divided into numeric, character string, graphic string, and binary string) or datetime ). There is also a special data type called DATALINK. The DATALINK value contains logical references to files not stored in the database.Numeric

The following methods have been tested, in the environment IBM X346,3.2gx2,4g,raid 1,DB2 v8.2.4,win2000 ADV Server,dms tablespace, the data load speed is around 601 million/min. Background: You need to change the database table space, or you need to migrate the data from all the tables in the database to a new database. Steps: 1. Select all tables in the sourc

The following methods have been tested, in the environment IBM X346,3.2gx2,4g,raid 1,DB2 v8.2.4,win2000 ADV Server,dms tablespace, the data load speed is around 601 million/min. Background: You need to change the database table space, or you need to migrate the data from all the tables in the database to a new database. Steps: 1. Select all tables in the sourc

This article mainly describes the actual operations of DB2 data replication and database migration. The methods provided in this article are tested and run in the Environment IBM x346, 3.2G × 2, 4G, in the DMS tablespace of RAID 1, DB2 V8.2.4, and Win2000 Adv Server, the data load speed is about 60-entries/min. Backgro

Background: if there is a global variable A of the int type, thread a only performs read operations on a, and thread B only performs write operations on, so do the two threads need to lock during operation a to maintain synchronization? This cannot be determined simply by locking or not locking. It should be discussed in detail. Scenario 1: If thread a reads a only for display to the interface, or a executes some operations after certain condit

import efficiency. The database administrator can set the n value based on the number of records. Generally, this value is not too large. However, if it is too small, it will also affect the data import performance. If the data volume is large, I usually set this value to 500. However, the database administrator must select a proper value based on experience. 4. Use the format option in the Import Statemen

It suddenly dawned on me today that 1 of the Int (1) and tinyint (1) in MySQL only specify the display length, not the storage length, only useful if the field specifies Zerofill. The limit of the digits is basically meaningless.Int (5) Here 5 represents the shortest display of 5 characters. Int (7) Here 7 represents the shortest display of 7 characters. When the length of the inserted character exceeds (m), it is equivalent to nothing; when the character length is less than (m), it is necessary

The following articles mainly introduce the actual operation methods of data replication and migration in DB2. The following methods are tested. In the environment of IBM x346, 3.2G × 2, 4G, RAID 1, run in DB2 V8.2.4 and Win2000 Adv Server. in DMS tablespace, the data load speed is about 60-entries/min. Background: You

Lakes 100 Midwest Chicago51 Plains 140 Midwest Dallas66 Pacific 270 Western San Francisco84 Mountain 290 Western Denver 2. DEL -- specifies an ASCII file, which is also an ASCII transfer stream. The rows in the data stream are separated by line delimiters, and the column values in the rows are separated by column delimiters. File Type modifiers can be used to modify the default values of these delimiters.

You may have heard of the new DB2 Viper architecture, which supports table and hierarchical data structures. In fact, the previous article summarized the New XML features in DB2 and described how to create database objects and populate these database objects with XML data, it explains how to use SQL and SQL/XML to oper

The DB2 datetime data type is one of the Data Types in the DB2 database. The following section describes the DB2 datetime data types for you. DB2