how to create relationship in oracle database

for the DBO schema and tries to create it on the DBO schema. But what if the user who creates Table A has only the read-only permission on the DBO schema but has no write permission? At this time, Table A is neither established nor established. This is the relationship between login, user, role, and schema that I will mention later. Here, in order to avoid confusion and improve the speed of

Tags: alert sts statistic audit ROM Su-aggregate targe tranHandled a small case yesterday, and later found that I do not know which dear friend modified the/etc/hosts file, causing the database to get down and record[[emailprotected] ~]# su-oracle The relationship between Oracle and/etc/hosts is ambiguous ~

EXP Export Oracle database table: (as native administrator), refer tohttp://jiqinlin.iteye.com/blog/758469 Export TABLE: Exp username/password @localhost (IP address): Port number/Database instance name file= local address \ Want to generate an indication. DMP owner= (username, Password) eg:exp C # #tjuser/TJUSER@LOCALHOST:1521/ORCL file=c:\adc160624.dmp owner= (

Tags: SQL Server Oracle random Cartesian product overThere are requirements as follows:Now it's time to tb1 the song field. The condition is to go to Tb2 to find songs sung by the same artist, randomly populated with the song name field in TB1A singer not only sings a song, so TB2 is a collection of all the songs the artist sings. The same singer in Tb1 may appear several times.It is necessary to find the song name of the same artist in the TB2, which

Relationship between constraints and column attributes NULLABLE in Oracle 10 GB Conclusion: The columname type not null and check (columnname is not null) results are different. Therefore: 1. You do not need to manually match the NULLABLE attribute. When all constraints explicitly causing NULLABLE to be changed from Y to N are deleted, NULLABLE is naturally restored to Y. 2. Do NOT use CHECK to implement no

Host (ID), FOREIGN KEY (business_id) REFERENCES Business (ID)) and insert into host2business (host_id,business_id) values (+), (1,3), (2,2), (2,3), (3,4); --Establish the relationship between user and host CREATE TABLE user2host (ID int not N

It is found that the DiscuzDB layer cross-database ing relationship table name prefix BUG, discuz relationship table. The DiscuzDB layer has a cross-database ing relationship Table name prefix BUG. discuz relational Table scenario: creat