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9th OCP: Open-closed principleSoftware entities (classes, modules, functions, and so on) should be extensible, but not modifiable.9.1 OCP OverviewModules designed to follow the open-closed principle have two main features:(1) is open for extensions (open for extension). This means that the behavior of the module can be extended. When the requirements of the application change, we can extend the module to th

Tags: page jump mysql 5.6 base technology share upload TPS ATI Scholarship OptionsMySQL OCP OverviewThe Oracle OCP (Oracle Certified Professional) exam may be familiar to you all. However, since MySQL was acquired by Oracle, Oracle has launched the MySQL OCP exam. Unfortunately, MySQL does not have a OCM (Oracle certified Master) exam, and OCM certification can b

LOGFILEDATAFILE '/u01/db/oracle/oradata/ora/system01.dbf', '/u01/db/oracle/oradata/ora/undotbs01.dbf', '/u01/db/oracle/oradata/ora/sysaux01.dbf', '/u01/db/oracle/oradata/ora/users01.dbf', '/ora02/oradata/ocp/mydemo.dbf', '/ora02/oradata/ocp/ats.dbf', '/ora02/oradata/ocp/bts.dbf', '/ora02/oradata/ocp/cts.dbf'CH

key is abstraction. In C ++, you can create a fixed abstract body that can describe any possible behavior. This abstract body is the abstract base class, and a group of people can act as a possible derived class. This base class does not need to be modified. The member methods (interfaces) in the class are declared as pure virtual functions. The specific implementation can be implemented, changed, and extended in the derived class. Using OCP, you ca

* How many courses Does OCP take? Which ones? Cost ry?Oracle 9i: 1z0-007, 1z0-031, 1z0-032, 1z0-033, $125 per portal.Oracle 10g exam two 042 and 043, $125 per PortalReference Site: http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage? Page_id = 151 * How long does a test take? How long does each exam take?The examination time is 90-20 minutes. You don't have to wait until you finish the next test. If you fail, you will have to wait a mont

Instructor name: Liu tie@ Oracle.comMSN:@ Hotmail.com About the OCP examination,SQL 70 questions: dbai 88 questions (69%) passedOCP: Pass OCA certification, test workshop2, need to register: Pass the registration number of the factory trainingDba2: 64 questions (61%) 1 hour and a halfOCM: participate in at least two factory training courses, advanced (get OCP 10g certification)Beijing/Shanghai/GuangzhouDBA

content in the sysaux tablespace. The view lists the following content: Occupied name Usage description Solution name Mobile Stored Procedure Current space usage During component installation, you can choose not to place it in the sysaux tablespace. If you decide to move the component from the sysaux tablespace to the specified tablespace, you can use the stored procedure of moving the component in the V $ sysaux_occupants view. The stored procedure for moving can also move components fr

How can I request re-issuance of OCP paper certificates if I cannot receive them? Copyright Disclaimer: During reprinting, please use hyperlinks to indicate the original source and author information of the article and this statementHttp://blog.csdn.net/wenshuangzhu/article/details/44487135 To request a printed certificate, you are required to log onto your CertView Profile and confirm your personal or office mailing address. We request you to follow

We need to draw the congratulation and square application on the standard GUI. The circle and Square must be drawn in a specific order. In the following example, the structured scheme and the evolution process of implementing the OCP principle are used respectively. Let's take a look at the code. 1. Structured Solutions Class _ procedural solution 2. OCP Solution Class _

Tags: oracle 11g OCP test Bank Analysis certification Exam TU Institute Oracle Oracle OCP Certification ExamQUESTION 5You want to enable archiving on your database. Presently, the database is running in Noarchivelog mode.Given below is the steps to accomplish the task in random order:1. Shut down the instance.2. Execute the ALTER DATABASE ARCHIVELOG command.3. Start up the instance and mount the databa

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

When creating a unique constraint, the OCP will forcibly create or reuse the index www.2cto.com (if no index exists in the previous column, the created index is a unique index. In this case, the index name and the constraint name are the same, and the index cannot be deleted. When unique constraint is deleted, unique index is cascaded. ② If an index already exists in the column, the previous index will be reused without changing the index type. When w

OCP question analysis _ 043: buffer cache and hit rate calculation method: www.2cto.com SELECT name, (1-(physical_reads/(db_block_gets + consistent_gets) * 100 H_RATIO FROM v $ ratio; the hit rate, as the standard for measuring the performance of the database, is already an old man's experience. Today, the hit rate can be used as a reference through the oracle wait interface, but the hit rate is not necessarily related to the system performance level,

Analysis of OCP question _ 007: synonym synonyms are the alias of the base table. They are defined only in the data dictionary. They do not store synonyms. They provide location transparency for distributed databases. Accessing resources in different regions is just like accessing local resources. www.2cto.com (I) Syntax:Private synonyms without public are the synonyms created by common users. They are private, this is because only the user who create

OCP question parsing _ 043: flashback transaction query can obtain the historical information of the specified transaction from FLASHBACK_TRANSACTION_QUERY and Undo_ SQL through this UNDO_ SQL, query the operations performed by a specific firm, and then we can restore specific transactions. flashback transaction query test www.2cto.com OCP question: [SQL] 13. you executed the following query: SELECT operati

The database has opened OCP notes. Thank you very much for the blog. Thank you. I _like_cpp http://blog.csdn.net/ I _like_cpp Among them, OCP has a question like this: Q606. you realize that the control file is damaged in your production database. After restoring the control file from autobackup, what is the next step that you must do to proceed with the database recovery? A. Mount the database B. Open the

The five principles of OO refer to SRP, OCP, LSP, DIP, ISP.Open Closed Principle is the most basic design principle in the Java world, which guides how we build a stable and flexible system.Defined:A software entity such as classes, modules, and functions should be open to extensions and closed for modification.Softeware entities like classes,modules and functions should is open for extension but closed for modifications.The opening and closing princi

After completing the last exam at noon, I always thought that I would be excited after I passed the exam. Who knows that my performance was calm and I was surprised, as if I thought it was something else. For a long time, there have been two OCP goals: one is to make a summary of Oracle over the past six years; the other is to verify that after so many years of work, I still have not lost my self-learning ability, this meaning should be far greater th

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.