Database Administrator

DB2 stored procedure: Basic knowledge When you classify remote servers and databases on the server on the client workstation, a simple DB2 client/server environment exists. In this environment, each time an SQL statement is executed on the database

In relational databases, the first generation of XML supports splitting or splitting) documents to adapt to Relational Tables or store documents as characters or binary large objects CLOB or BLOB ). Either of the two methods tries to forcibly

A view is a logical table based on one or more tables or views. It does not contain data and allows you to query and modify the data in the table. A view-based table is called a base table. Oracle database objects are divided into five types: tables,

Sybase Database repair is divided into two situations: 1. The device used by the database is normal, and the demodb status of the database is suspect.. 1) register with sa Isql-u sa-P 1> 2) modify the server attribute and set the system table to

Each group is numbered from the beginning. For each row, the NTILE function returns the ID of the group to which the row belongs. If the number of rows in a partition cannot be divisible by integers, a Member may have two groups of different sizes.

As an excellent open-source database software, PostgreSQL is worth learning deeply. First, summarize the Storage Architecture of the PostgreSQL database. The traditional storage structure of relational databases uses table space management, which

1. Database Data Storage 1.1 file: Once a database is created, two files are generated: DataBaseName. mdf: master file, which is the final place where data in the database is stored. DataBaseName. ldf: a log file, a series of log records generated

Step 1 SOLyog is easy to download, install, and use. I went to the relevant website to download it. It is only kb in size. Install two Files, one Executable File .exe and one dynamic link library file. dll, in the path C: \ Program Files \ SQLyog.

How to execute a stored procedure when starting SQL SERVER? Create the stored procedure in the master database, and then find the stored procedure in the Enterprise Manager. Right-click the stored procedure and choose Properties. Select "execute

A cluster is an effective solution to achieve high availability. Sometimes it is counterproductive. Moreover, it is very expensive. Therefore, database administrators can use Log transfer instead of clusters to provide high availability. Log

Transaction Log Transaction Log Transaction logs) is a very important but often ignored part of the database structure. Since it is not as active as the schema in the database, few people are concerned about transaction logs. Transaction logs are

I. porting process records Basic information: two minicomputers, one sun250, with solaris8 + oracle8i, jgsun, ip 10.11.1.11, running, with application connection, and one with sunv890, it is installed with Solaris9 + Oracle10g, The Machine name is

SQL Server automatically creates a database named tempdb for use as a workspace. When you CREATE a temporary TABLE during storage, for example (CREATE TABLE # MyTemp ), the SQL database engine creates the table in the tempdb database no matter which

Overview Clever planning is the basis for implementing the relational database management system (RDBMS. It is the only way to meet the requirements for more storage capacity and faster information retrieval. To get the most out of Microsoft SQL

Relational databases represent data as a simple two-dimensional model, that is, records represented as rows and columns for storage and processing. Relational databases were generated earlier, but they are only suitable for the storage and

The database and application software branch of the China Software Industry Association was established at Peking University in March 16. This will attract the attention of national securities, insurance and other industries and database vendors

In actual Oracle applications, many people may encounter such problems. For performance or other considerations, you need to change the tablespace of a table or all tables of a user. The common practice is to first Delete the table and then

SQL Server 2000 makes it easier to export data in XML, but it is troublesome to import and process XML data in SQL Server 2000. If you refer to Books Online (BOL), you will find related entries, including OPENXML and OPENROWSET. All of these

Backup is the simplest way to protect data. This section describes multiple backup methods. To get a consistent backup, make a lock tables lock on the relevant table. You only need one read LOCK. When you copy a file in the database directory, this

Oracle database backup and recovery is not accessible to every Oracle database administrator. Oracle Database Backup has three methods, each of which has different recovery features. Therefore, you should integrate database and file system backup,