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This time to bring you the PHP closure principle (OCP) Use case analysis, the PHP closure principle (OCP) to use the attention of what, the following is the actual case, together to see. 1. What is "open-closed" With the increasing of the scale of software system, the complexity of maintenance and modification of software system continues to improve, this predicament has prompted the French engineering aca

1: OCP: open-closed Principle* Open for extension* Close for Modification2: CaseCallet prostitutes are those who pull customers and receive sexual compensation. Let's divide the prostitutes by their positions. Prostitutes have different prices for different identities. 3: DesignOur general design is like this.Class callet{Man man;Public void getmoney (){Man. Pay ();}}Class man{Public void pay (){}} But now callet prostitutes have another customer

and permissions, Audit function installation/migration, audit function data cleaning, audit control, revocation, closure, Standard and high-precision database audit configuration and operation of the command and other daily management and maintenance. Details of the course are as follows:01. Audit Function Introduction02. Audit-related parameters and views03. Audit level and permissions04. Installation of Audit function05. Migration of Audit functions06. Cleanup of Audit function data07. Contro

types, the importance of Oracle Backup, Oracle Backup strategy, how Oracle develops the right backup strategy to ensure efficient backup , Oracle Backup classification, MTTR,MTBR,MTTF, Oracle physical Backup and logical backup, Oracle Backup recovery tools, backup optimization on Oracle database configuration, several types of data structures that are important in Oracle backup and recovery, An Introduction to Oracle Restore and recovery, and an introduction to the Oracle DB instance recovery p

Oracle Database Rman Backup Recovery Foundation, such as Rman role and architecture, Nocatalog and Catalog Introduction and catalog configuration, detailed the use of Rman, Detailed instructions for Rman common commands List,report, Backup,configure,set,crosscheck,validate,change,delete,restore,recover,switch, Blockrecover, convert, etc. use.Oracle Rman Backup Recovery 1-BASIC, the course content is as follows:1. Rman Function and Architecture2, Nocatalog and catalog introduction and catalog Co

Oracle Video tutorial, wind Brother this set of Oracle Tutorial Training learning Oracle Database Logminer related concepts and use of detailed, Logminer Use the data dictionary analysis of the source database, extract the Logminer dictionary to the dictionary file to analyze, logminer How to view the log analysis results, Logminer log Mining Case 1-analysis of the Production system table data loss reasons, Logminer Log Mining Case 2-loss of table data due to recovery of DML errors, Logminer lo

Brother this set of Oracle Tutorial training to learn Oracle data pump EXPDP/IMPDP concept and command parameters and use method, configure the production environment of logical automatic backup strategy, EXPDP/IMPDP production environment data migration process and actual case, character set, version compatibility, how to stop EXPDP and IMPDP background processes, how to clean up the data pump job, how to do trace trace analysis of EXPDP/IMPDP and usage summary.Oracle Database logical Backup R

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,T.extent_management Extman, T.segment_space_management SegmanFrom Dba_tablespaces T,(select Tablespace_name, sum (bytes) allocated, COUNT (file_id) datafiles from Dba_data_files Group by Tablespace_name) d,(select Tablespace_name, sum (bytes) free from Dba_free_space Group by Tablespace_name) F,(select Tablespace_name, sum (bytes) used from Dba_segments Group by Tablespace_name) uwhere T.tablespace_name = D.tablespace_name (+)and T.tablespace_name = F.tablespace_name (+)and T.tablespace_name =

decisions. setting thestatistics_level parameter tobasic disables The collection of many of the important statistics required by Oracle Database features and Fu Nctionality, including: Automatic Workload Repository (AWR) snapshots Automatic Database Diagnostic Monitor (ADDM) All server-generated Alerts Automatic SGA Memory Management Automatic Optimizer Statistics Collection Object Level Statistics end to End Application tracing (v$client_stats ) Database Time Distributi

metHandler_module-the PL/SQL process that runs when the audit condition is metEnable--true/false, enabling and disablingStatement_types--types of statements audited: SELECT, INSERT, UPDATE, DELETEAudit_trailaudit_column_opts--Dbms_fga_any_columns/dbms_fga_all_columnsExample of creating an audit policy:Dbms_fga.add_policy (Object_schema = ' HR ',object_name = ' EMPLOYEES ',Policy_name = ' POL1 ',audit_condition = ' department_id=80 ',Audit_column = ' SALARY ');Audit View:Dba_audit_trailDba_fga_a

the online redo log file is full, ARCN archives the online redo log file to the archive log file. 6, the storage structure of the database.1) Physical database structure• Control File• Online redo log files (Redo log file)• Data File• Instance parameter files (Instance Parameter file)• Password files (Password file)• Archive redo log files (Archive Redo log file)• Alert log and trace file (alert log and Trance files)2) Logical database structure• Table Space (tablespace)• Segment (Segment)•

independently of any backup of the current control file explicitly request Ed as part of your backup command. If you enable control file Autobackups, then RMAN automatically backs up the control file and the current server parameter FileSql*loaderhttp://bbs.cqsztech.com/forum.php?mod=viewthreadtid=521In the following case, even if the parameter undo_retention specifies a value, it may be ignored?For Fixed-size undo tablespaces, the system automatically tunes for the best possible undo retention

Tags: Oracle 11g installation Diagram Oracle database tutorial Oracle installation Oracle Video tutorial Oracle Tutorial1. After completing this chapter, the Oracle Video tutorial will be able to master the following:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/6C/F9/wKiom1VYlzGBc2q8AAGwuGI81FQ479.jpg "title=" 05- High.jpg "alt=" wkiom1vylzgbc2q8aagwugi81fq479.jpg "/> use Oracle Enterprise Manager to access the database using the Sql*plus tool command How to set the environmen

Worked for a system integration company that did not use Oracle for less than two years. Deployed and maintained from stand-alone to RAC, there is an initial understanding of Oracle's architecture, but it's basically what part of the section is used to learn which part. The middle process is tortuous and complicated. Learn from learning to install Oracle, Import Export, Rman Backup, AWR report analysis, RAC Build, ASM Disk Management, cluster troubleshooting, and research. This year, thanks to

Tags: oracle 11g OCP test Bank Analysis certification Exam TU Institute Oracle Oracle OCP Certification ExamQUESTION 7See the Exhibit:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/58/D3/wKioL1S-ANjxQfvvAAGCoebVEEQ971.jpg "title=" Picture 1.png "alt=" wkiol1s-anjxqfvvaagcoebveeq971.jpg "/> Which statements is true regarding the USERS tablespace? (Choose all, apply.)A. a bitmap is used to the re

Preface in this chapter, we will explain part 1 of the Five Principles of S.O.L. I. D: Implementation of JavaScript language, and the principle of open/closed OCP (TheOpen/ClosedPrinciple ). The open/closed principle is described as follows: Softwareentities (classes, modules, functions, etc.) shound... PrefaceIn this chapter, we will explain part 1 of The Five Principles of S.O.L. I. D: Implementation of The JavaScript language, and The Principle of

I have not written any new logs for 20 days. Sorry, I am very concerned about this blog. We have prepared for three months since March. We have attended Oracle 9i training these days and successfully passed all four OCP courses. Although it takes more than a month to get the certificate, you can put your mind down for the moment. The current work is not directly related to Oracle. The first test is to obtain a certificate (I have never been certified

I finally completed all the OCP DBA courses. Tired! In general, Oracle certification is worth the test. I have a ccnp and MCSE certificate, but after passing the DBA examination, I feel that I have not only deepened my understanding of modern databases, but also enriched the knowledge structure of computer science. In my opinion, Oracle databases even have some operating system functions. There are quite a few things to remember about Oracle exams. T

traveler and the method of arriving is very close, and the specific way to arriving is a low level problem. The above problems and implementation are a common method to achieve the [open and closed principle]-The Policy mode. There is also a common implementation method: Template Method. In fact, the essence of these two methods is the combination of object-oriented methods. And inheritance. We have learned how to encapsulate changes. How can we encapsulate changes? Mastering this skill i