oracle sql data modeler

Tags: character dev large database information Management DBA needs to run develop fromI. Classification of databases I. Classification of databases1. Small database: Access, Foxbase2. Medium database: Informix, SQL Server, MySQL3. Large database: Sybase, DB2, Oracle Second, how to reasonably use the database in the project, can be based on the following three aspects to start1, the size of the projectA, h

Oracle triggers. When a table is updated or inserted, data is synchronized to a table in another database. oracle Data is synchronized. Two tables are the T_SRC_WEATHER_TSPG fields under User, User B's t_src_weather table, It is required that when the T_SRC_WEATHER_TSPG table under user A is inserted or updated, the

variables: 1. p_table 2. p_constraint_name 3. p_schema The first two are easy to find, but why is there p_schema? Because the current USER name may also be a dangerous string constructed by the USER. Well, according to the general rule, we should follow the order below: 1. Static SQL. Do not use variables. 2. Bind the variable. Similar to the PreparedStatement in Java, data is stored in variables instead o

Oracle's official SQL Developer comes with Oracle migration Workbench. What is Oracle SQL Developer? On the official page, this is how it is presented: Oracle SQL Developer is a free and fully supported graphical too

;export tables-> Oracle Export Select option exports. dmp files. Import steps: Note: It is better to delete the previous table before importing, except of course the import database. 1 tools->import tables->sql inserts import. SQL file. 2 tools->import talbes->oracle Import before importing the DMP file. Some notes:

Oracle BASICS (1): Use the oracle instance and SQL * plus commandI. Three-tier structure of oracle Database1. Client: used to access databases. Such as sqlplus and pl/SQL dev. 2. database Server-oracle dbms (database management sy

non-routine recovery of Oracle 12C CDB database without database backupFamiliar with Dul friends know Dul is file# 1 Block 1 kcvfhrdb find bootstarp$ Segment Header (in fact Kcvfhrdb is bootstarp$ segment Header RDBA address), Then through the related SQL stored in the bootstarp$ to find some base table objects (obj$,tab$,col$,seg$, etc.), and then through their positioning to the specific object of the seg

This article I have, the right to record inquiries, the original to the current torch Oracle Lunar goddess [Oracle@lunar ~]$ sqlplus/as sysdba sql*plus:release 11.2.0.3.0 Production on Fri Mar 23:46:35 2013 Copyrigh T (c) 1982, Oracle. All rights reserved. Connected to:oracle Database 11g Enterprise Edi

PL/SQL is an extension of Oracle's standard database language. Oracle has integrated PL/SQL into ORACLE servers and other tools, in recent years, more developers and DBAs have started to use PL/SQL. This article describes basic PL/SQL