Database Administrator

Install and configure MongoDB 2.4.10 IntroductionMongoDB is a distributed file storage-based database. Written in C ++. It is designed to provide scalable, high-performance data storage solutions for WEB applications. FeaturesHigh performance, easy

You are not authorized to create a view in Oracle. You are authorized to create a view in oracle. Q: After using scott to log on to Oracle, the system creates a view and prompts "insufficient Permissions". How can this problem be solved?Answer:This

[How can I explain SQL injection to non-technical personnel ?], SQL Injection Original English:How can I explain SQL injection without technical jargon? When explaining SQL injection to non-technical personnel, I will use a simple analogy. SQL

Use codeblocks to debug mysql and codeblocks to debug mysqlCodeblocks debugging mysql environment setup 1.decompress mysql-5.6.23.zip to the user root directory ~ /2. In the user root directory ~ /, Create a Folder build and mysql3. open codeblocks,

Oracle11gR2 reports TNS-01190 in Windows 7: The user is not authorized to execute the requested listener comm, authorized In Windows 7, enter the Oracle listener named "lsnrctl" in the CMD console and execute related listening commands, as shown in

Oracle Database cursor case and source code, oracle cursor 1. cursor ConceptCursor is a data buffer provided by the system for users to store the execution results of SQL statements. Each cursor area has a name. You can use SQL statements to obtain

Initial Application of SparkSQL (used in HiveContext) and sparksqlhive After one day, the result3 error in the previous section was finally solved. As to why this error occurs, here we should first sell a token to see how this problem was discovered:

[Introduction to algorithms] 12th skip table, Introduction to algorithms skip This section introduces a new data structure-Skip table. A skip table is a simple and interesting data structure for dynamic search. It is easy to implement and ensures

Use PowerDesigner 15 to reverse engineer existing databases and powerdesigner15 1. Start PD 2. Menu: Database-> Congfigure Connections the Congfigure Data Connections dialog box is displayed. Click Add Data source. The create Data source dialog box

Mysql adds users and grants various permissions. mysql grants permissions. Mysql> grant permission 1, permission 2 ,... Permission n on database name. Table name to user name @ user address identified by 'Connection password'; permission 1,

One SQL interview question (row and column Interchange), SQL questions There is a high probability that an SQL question will appear during the interview. Recently, some students will still encounter such a question during the interview. I would

Database optimization tutorial (10) [excellent chapter] solve the four ways in which indexes are not used when like '% str', tuning % strIii. Index 7. Four methods to solve like '% str' without fuzzy query As mentioned above, the index will not be

15. ordered table search and clue index search, 15 clue IndexesReprint please indicate the source: http://blog.csdn.net/u0126375011. Search an ordered table1. Half-fold search/Binary Search Algorithm(1) Basic Ideas: In an ordered table with

Difference between mysql-authorized localhost & % and persistent authorization error solution (install openstack), mysqllocalhostFirst, we will attach the openstack document to illustrate why permission errors are reported when % is granted!Mysql-u

Exception in initAndListen: 12596 old lock file, terminating, fileexception # Mongd-f/etc/mongodb. conf error reported Monogdb. log analysis Unclean shutdown detected. Please visit http://dochub.mongodb.org/core/repair for recovery

Run the rpm package to teach you how to install MySQL (MySQL-server-5.6.23 for CentOS6.5 _ 64bit), centos6.5mysql Reprinted please indicate the source: http://blog.csdn.net/guoyjoe/article/details/44753455 1. Check whether MySQL is installed on the

Plsqloracle_home solution cannot be identified by plsql on 64-bit ORACLE clients1. Problems Plsql has only 32-bit programs so far, and most desktop systems use 64-bit windows operating systems. On 64-bit windows, in most cases, the 64-bit ORACLE

Experiments on free and bad data blocks:Use dbv to check data files[Oracle @ orahost ~] $ Dbv file =/oracle/oradata/orcl/users01.dbfDBVERIFY: Release 10.2.0.5.0-Production on Tue May 6 06:48:02 2008Copyright (c) 1982,200 7, Oracle. All rights

MongoDB UTC time problem, mongodbutc time When a batch of data is imported by accident, it is found that the date seen in MongoVUE is 8 hours less than the actual date, because MongDB uses UTC time (Coordinated Time) If you want to display it

Why study Oracle technology ?, Learning Oracle technology? As we all know, Oracle accounts for more than 48.1% of the market share in the enterprise database field and has become an absolute leader in high-end enterprise database software. With