how to create table in oracle database

1. Use the show statement to find out what databases are currently on the server: Mysql> show DATABASES; +----------+ | Database | +----------+ | MySQL | | Test | +----------+ 3 Rows in Set (0.00 sec) 2. Create a database Abccsmysql> Create DATABASE Abccs; Note that differ

idea, and partition represents a technical implementation. When the table size exceeds G, you can consider Table Partitioning to improve query efficiency and balance IO. Oracle Partition Table is an implementation form of table Partitions provided by the

-28 ', ' yyyy-mm-dd ')); SELECT * from Tbl_user_session; COMMIT; At this point, there is still data in the tbl_user_session even if a transaction is committed.At this point, when the session is closed (disconnect the database), then connect to the database, and the query will have no data. Note: In Pl/sql developer The default configuration is to open a window, that is, to re-establish a session, so be care

Label:Write in frontMySQL database was used in the project, and MySQL was not used before, and today we learned the common syntax of MySQL, which is very similar to SQL Server syntax. It's pretty simple to use.An example1. Create a database named school. 1. Create a Student information

Temporary tablespace temp; --Create TABLE space Create Tablespace myms DataFile ' c:\myMS.dbf ' Size 1M Autoextend on; --scale table space--Modify table space size ALTER DATABASE DataFile ' c:\m

{from database | to database | from database to database} {append | create | insert | replace} destination_table [(column,...)]Using Query Here, we will explain the Division: Copy-this does not need to be explained. The main command declares to execute the copy operation. F

userGrant CONNECT,RESOURCE,DBA to Shgbyp;--Import and exportImp shgbyp/[email protected] file= "E:\20170310.dmp" Full=y ignore=y--The corresponding delete table spaceDrop tablespace SOA including contents and datafiles--Delete UserDrop User SHGBYP CascadeHere is the emphasis: delete user Shgbyp, just delete the user under the schema objects, do not delete the table space assigned to the user. Should be for

Oracle sequence explanation and creation of auto-incrementing primary key Oracle sequence primary key sequence: a database object provided by oacle to generate a series of unique numbers. L automatic provision of unique value l shared object l mainly used to provide the primary key value l loading the sequence value into memory can improve access efficiency 1. fi

: Source database Sid:jssweb, Target library: jssstr Downstream capture Copy webdata table space, configured for bidirectional replication Synchronous DDL Operations Dbms_streams_adm. Maintain_tts Direct Build Configuration STREAMS management has been created, and the database chain for source and target-side communication has also been created See more hi

managed locally. The Local management table space is managed through bitmaps.Autoallocate indicates that the table space is automatically assigned a range, and the user cannot specify the size of the range. Only more than 9.0 of the versions have this feature.The uniform indicates the fixed size of the table space's range, which is 1m by default.You cannot set t

1, primary key and foreign keyPrimary key: A record in a relational database has several attributes, if one of the attribute groups (note is a group, can be one, can be multiple) can uniquely identify a record, then the attribute group is the primary keyFOREIGN key: A column in a relational database table or a combination of several columns whose value matches a

the open page set whether to modify the default root user (super Administrator) password (default is empty), "New root password", if you want to modify, fill in the new password here, and enable the function of root remote access, do not create anonymous users, click "Next" Continue the configuration: Please note that the above method is the first installation, if you have previously installed a problem that is not working properly without uninstalli

'/Home1/APP/Oracle/product/10.1.0/oradata/myoracle/usertbs01.dbf' size 1000 mCharacter Set zhs16gbk;The following describes the meanings of the keywords in the create database statement:Datafile: Data File definition of the system tablespaceLogfile: the definition of a log file group.Undo_tablespace: definition of the redo tablespaceDefault temporty tablespace: d

MySQL CREATE database, create data table written in frontMySQL database was used in the project, and MySQL was not used before, and today we learned the common syntax of MySQL, which is very similar to SQL Server syntax. It's pretty simple to use.An example1.

modifications, but it is not possible to change an index organization table to a heap table when the normal heap table is changed to a partitioned table. And, fortunately for tables accessed by a large number of DML statements, Oracle provides an online redefinition

[Oracle] Data Guard series (4)-creating a physical standby database without stopping the master database needs to create a physical standby database of DG for a 24x7 production database, the master

Label:One, we use WAMP, first guarantee Wamp open, service open state Second, create the database, create the tableNote that the data set here is to choose UTF8, otherwise the insert data will be garbled to create table selection advanced properties, also set the dataset ca

Basic Database Table operations-create tables, indexes and queries, and database Indexes1. Define, delete, and modify basic tables(1) define basic tablesCreate table [, ......[, For example, create a student tableCreate