crate database

1. Advantages of the new 12c PDB Features1) multiple PDB can be integrated into a single platform.2) You can quickly provide a new PDB or a clone of an existing PDB.3) with the plug-in technology, the existing database can be quickly redeployed to a new platform. 4) multiple PDB database patches or upgrades completed at once.5) You can patch or upgrade a PDB by unplugging a single PDB to a higher version o

Databases are almost an essential element in project development. I believe everyone is familiar with sqlServer. Have you ever encountered such a problem: when analyzing or deploying databases, the database is incompatible. Modify database compatibility version syntax ALTERDATABASEdatabase_nameSETCOMPATIBILITY_LEV Databases are almost an essential element in project development. I believe everyone is famili

原文出处：http://blog.csdn.net/dba_huangzj/article/details/39473895，专题目录：http://blog.csdn.net/dba_huangzj/article/details/37906349 No person shall, without the consent of the author, publish in the form of "original" or be used for commercial purposes without any liability. Last article: http://blog.csdn.net/dba_huangzj/article/details/39003679 Preface: In SQL Server, security is divided into two levels: server-level and database-level. The server's logi

Tags: mdf Create one of the files www. Secure Enterprise HTTP IDF binaryDatabase Fundamentals # 3: What's in a database? It is worth mentioning that many people will not need to create their own database. You may never be able to create your own tables or other data structures. You may be installing an application to create a database for you, and you are just do

a primary key(because it has no descendants), but must have a foreign key (because it has a father).The design of primary key and foreign key plays an important role in the design of global database. When the global database design is complete, there is an American database design dedicated toHome said: "Key, Everywhere is the key, in addition to the key, nothin

Oracle442 application scenarios ---------- database instances and access Database Application Instances The Application Scenario 1-7 is the installation process of Oracle. Here, I will explain a lot about it. There are a lot of materials on the Internet and it may be added later. Application Scenario 8View the location of all data files:Select name from v $ DATAFILE;List command:LISTSAVE command:Save d: \ O

Label:First, the database nameWhat is a database name?The database name is the identity of a database, just like a person's ID number. He used parameters Db_name says that if a machine is loaded with multiple databases, every database has a

Summary of database backup and Restoration Technology of the IT Ninja Turtles, and backup of the Ninja Turtles Database 1. exp/imp (export and import the library and unload the database) 1.1 Basic commands 1. Get help $ Exp help = y $ Imp help = y2. Three ways of working (1) Interactive Mode $ Exp // enter the required parameters as prompted (2) Command Line $ E

Tags: fixed how to restore isolation many simple button class operationsOriginal link: https://www.scarydba.com/2017/06/20/database-fundamentals-3-whats-database/ Reprinted from book– "execution plans" CODE AZURE DATA PLATFORM Instructors It is important to note that many people never need to create their own databases. You may never create your own tables or other data structures. You can only run backu

Tags: ORM Select Run Introduction Open principle CTI and object_idBrief introductionIn a database migration and upgrade scenario, we often encounter a problem: how to simulate real business stress when doing stress testing, there are many ways to solve this problem, such as: The application develops the simulation program or uses the Stress test tool simulation, such as load runner, but, If you want to say which method can best simulate the real busin

Sophomore writing next semester, now graduated one months, finishingWell, the previous writing is very naïve, only self-understanding, online a lot of, probably the meaning of the next barmysql=========================================http://user.qzone.qq.com/652768664/blog/1347859952To connect MySQL needs to install MySQL, in the MySQL C-disk installation directory has a connection lib, will change the Lib Add reference with the project OK; static void Main (string[] args) {listaccess

Graphic tutorial on restoring database backup in SQL server 2000, MySQL Database Backup MSSQL is a database management system of Microsoft. This document describes the backup and restoration functions of databases in MSSQL2000. 1. Ensure that your backup file is a bak file and the backup file can be restored normally. 2. Choose "Enterprise Manager"> "

1. view the database statusDirectory view: Select name, state_desc from SYS. databases where name = 'stusystem'Function: Select databasepropertyex ('stusystem ', 'status ')Stored Procedure: sp_helpdb stusystem2. Modify the database2-1 modify Database NameAlter database database_name modify name = new_nameExec sp_renamedb 'studentsystem', 'stusystem'2-2 expand the

Tags: information memory dependent steps technology sharing comparison must be good aboutObjective of this book: Understand the basic concepts and paradigms of a database Familiar with SMSS, T-SQL implementation of the database, build tables, add constraints Mastering T-SQL programming for powerful queries Master Creating indexes, views, quick access to databases Be familiar with creating stored procedures

Tags: 38714 38760 38706Learning Oracle last night with HR users: CREATE TABLE reg_copy as select * from regions; There is no response to a blank, do not want to forcibly quit, and then use the Oracle user to terminate the session of the way to deal with, successively used three ways:The first type: Select sid,serial# from v$session where username= ' HR ';Then use:ALTER SYSTEM KILL SESSION ' sid,serial# ' IMMEDIATE.Second type:ALTER SYSTEM DISCONNECT SESSION ' sid,serial# ' IMMEDIATEThird: Use th

Tags: Time table transaction post customer service sharing cannot SSI"The beginning of the database design classic", is now learning this book, although the previous read a similar book, may be due to previous experience, some of the book said something only digested part, now relive side understood more. So read the first time read do not understand it does not matter, after a a year to read again, or will read not understand, haha.That's the book.Ch

[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 database must not be shut down. At first, it was impossible. Later, I checked

C Programming Interface of SQlite database (2) database connection by Drizzle QQ: 2537869892012-02-03 Library Initialization int sqlite3_initialize(void);int sqlite3_shutdown(void); Before using SQlite Library, you should first call the sqlite3_initialize function, which allocates resources and initializes some necessary data structures. Another function used with this function is sqlite3_shutdown, which

Implementation principle of DB database horizontal segmentation-Database Sharding, table sharding, master/slave, cluster, and server load balancer bitsCN.com Chapter 2 Introduction With the popularization of Internet applications, the storage and access of massive data has become the bottleneck of system design. For a large Internet application, billions of PVS per day will undoubtedly cause a considerable

Atitit. database-the difference between catalog and schema design and the actual use of obtaining all database tables in the database java jdbc p. atitit. database ----- differences between catalog and schema design and how to obtain all database tables in the