learn as400

Learn Basic Concepts First1.COBOL character : contains: user-defined words user-defined characters ? System-names ? Reserved words keywords 2. user-defined character user-defined words: Legal definition: ? A-Z ? A-Z ? 0-9 ? -(hyphen). 3. System name system-names Computer-names ? Language-names ? Implementor-names: Environment-name Assignment-name 4. keyword Re

The format of the identity department:code example:Identification Division.Program-id. Idsample.AUTHOR. PROGRAMMER NAME.Installation. COBOL Development CENTER.Date-written. 08/27/88.Date-compiled. 09/01/88 12:57:53.SECURITY. Non-confidential.Format of the Ministry of the Environment:code exampleEnvironment Division.CONFIGURATION section.Source-computer. ibm-as400.Object-computer. ibm-as400.Special-names. Cð

of the memory Description of the file General formatFD file name (internal file name)01 Record Name05 data item 1 PIC ...05 Data item 2 PIC ...An FD statement is a file descriptor that describes the properties of a file and a record, such as the record name, format, and length .All data groups and data items under the FD statement make up a record of the file.Record Description: The record description begins with a 01-layer number followed by a record name. The data format used to define r

) and backup files (week)Enter the following command:CRTLIB backCRTSAVF Back/week Uploading Backup files5.1. Log in to the DB2 AS400 server using the FTP tool.5.2. Enter username/password: Qsecofr/password.5.3. Enter the following command:ftp> pwd257 "QGPL" is the current library.Ftp> CD Back257 "Back" is the current library.Ftp> bin (must be uploaded using binary)Representation type is binary IMAGE.ftp> LCD c \Local directory now C:.Ftp> PUT WEEK.

In the SNA network connection, can two AS/400 Ethernet cards be backed up to each other? Solution: AS/400 FTP provides the batch FTP function. You do not need to enter an FTP sub-command in the FTP interactive environment. The entire process

The 1. The host v5r4, that is, the I5 machine, has a function row_number ()-this is not verified because its host environment is v5r3. Select * from (select row_number () over (order by ID) as RN, * From Table1) as Te 2. The host is v5r3 or the

Reply content:Basic syntax Coding techniques, coding specifications Various functions Various PHP modules Learn a CMS or two-time development Learn about Pdo,ado, data-driven layers, and learn MySQL on the go Error mechanism Object oriented Use a framework to help develop Magic method Design Patterns Reflection Write all kinds of tools, drivers. Write a small fra

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0 reply content: basic syntax Coding skills and coding specifications Various functions Various PHP modules Learning a cms or secondary development Learn about PDO, ADO, data driver layer, and mysql Error Reporting Mechanism Object-oriented Use a framework to help developers Magic Design Mode Reflection Write tools and drivers. Write a small framework by yourself (to be honest, you don't have so much energy to write it. You need to understand a lot of

reading is not enough, actual combat is the most important, so-called learning, such as in the "Python core programming 2" after class exercises/learning some small script/etc., here are several sites for the Python script instance study: (1). Code share list--Python (2). Python Code Library (3). https:// searchcode.com/ (4). GitHub best choice, more search some related projects, look at someone else's code, copy the wheel!! 4. Advanced entryThe Python advanced section of learning can ref

C ++ experts learn advice and learn with an open mind ~~ [Reprinted], advice and learn modestly 1. Take C ++ as a new language learning (it has nothing to do with C! True .); 2. Read Thinking In C ++ instead of C ++. 3. read "The C ++ Programming Language" and "Inside The C ++ Object Model". Do not read them because they are difficult and we are beginners; 4. Do

ObjectiveCommon problemsSchool curriculum design is not perfect, involving a wide range of what is not in-depth.Teachers lack practical work experience, for example, I often see teachers often teach students to do math problems such as small programs, but in the actual work, we do not play this.In my opinion, to learn a programming language, there is no need to limit the classroom, on the one hand is slow, on the other hand, if you want to

PHP Learning Notes (a) easy to learn php,php learn notes Target planning: With the first lesson, we can learn about the PHP environment. 1. Understanding of the environment: 2. Access method: 3. Modify the code and view it. 4. Use of variables 5. Code indentation to have a hierarchical relationship, and the best between the code to keep blank lines 6. Variable N

Test practitioners Learn what Python should know:The first is the variables and data types, followed by a list, a dictionary, and some Json processing, and then the loop judgment and the functions or classes. The Focus:1. Cycle judgment and the dictionary this is the point.2. Functions and classes, classes of learning this piece takes more time to learn its integration, encapsulation, polymorphism, and so o

Learn Linux is it difficult to develop? linux Beginners are often asked questions, in fact, Linux and Windows are all part of the operating system, For most people, the Windows operating system is very familiar with, and the Linux operating system has not been used, so it is difficult to find, in fact, You can use the Linux operating system as easily as Windows, as long as you master its command and some system rules ! want to

Java is used to do the project! Java's main area of application is enterprise-level project development! To engage in enterprise-level project development, you need to master the following points: 1, master the basic steps of project development 2, with a strong object-oriented analysis and design skills 3, master use case driven, architecture as the core of the mainstream development method No one wants to be satisfied with their own life to master a number of code implementation skills, ot

Article Introduction: you may know what the selector is, what is called the attribute, what is the value, maybe you have a little bit of one or two on the CSS layout, but that's not enough. If you want to learn HTML and CSS from the beginning, I suggest you take a serious look at this tutorial. Otherwise, in the work, you still fall into the mire of confusion struggling. This article introduces the CSS basics that are now

ajax| Tutorial Ajax is made up of HTML, JavaScript™ technology, DHTML, and DOM, an excellent way to translate clumsy WEB interfaces into interactive Ajax applications. The author of this article is an Ajax expert who demonstrates how these technologies work together-from a general overview to a detailed discussion-to make efficient WEB development a reality. He also uncovered the mysteries of Ajax's core concepts, including XMLHttpRequest objects. Five years ago, if you didn't know XML, you wer

some of the DOM related links in resources). But more importantly, the DOM defines the object's type and properties, allowing the browser to represent markup. (The next article in this series will specifically describe the specification for using DOM in JavaScript and Ajax code.) ） Document objects First, you need to access the object model itself. This is very easy; To use the built-in document variable in any JavaScript code running on a Web page, you can write the following code: var dom

"]" between the value of the left operand, here is put Eax+2*eax into eax.and the sixth Line Assembly is actually the meaning of the value pointed to by the pointer, that is, Intel compiled:MOV Eax,[edx+4*eax]It means taking the value of the memory address edx+4*eax and putting it in the eax. As for what this value is, we do not know, so the book also only wrote a m[...].If you turn the mov of the last instruction into a lea:Lea Eax,[edx+4*eax]It means to put the value of Edx+4*eax in the EAX.W