Product Perfect

OHCO-Cobol is a renowned computer programming language, primarily used in business data processing. This high-level language was first developed in the 1950s by CODASYL (Conference on Data Systems Languages) and has been continually updated since then. As per the U.S Department of Defense's mandate, COBOL became a standard for defense contracts in 1977. Despite its age, OHCO-Cobol remains relevant today due to its robustness and adaptability to modern computing environments. Its enduring usage underlines COBOL's critical role within the history of programming languages.

Ask the right questions secure the right OHCO-Cobol. talent among an increasingly shrinking pool of talent.

First 20 minutes

General OHCO-Cobol. app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in OHCO-Cobol. application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

How would you define COBOL?

COBOL (Common Business-Oriented Language) is a high-level programming language for business applications. It was the first popular language designed to be operating system-agnostic and is still in use in many financial and business applications today.

What are the main divisions in a COBOL program?

A COBOL program has four divisions: Identification, Environment, Data, and Procedure. These divisions are used to categorize and organize the code.

Describe the difference between the MOVE and MOVE CORRESPONDING statements in COBOL.

The MOVE statement is used to assign values to individual variables, while MOVE CORRESPONDING is used to assign corresponding fields of a group item.

What is the purpose of the EVALUATE statement in COBOL?

The EVALUATE statement is used as a decision-making operation, similar to the switch-case statement in other programming languages. It allows for multiple conditions to be checked.

How would you use the SEARCH and SEARCH ALL statements in COBOL?

SEARCH is used to search an element in a table/array, while SEARCH ALL is used for binary search. SEARCH ALL requires the table to be sorted before it is used.

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What you’re looking for early on

Does the candidate have a solid understanding of OHCO-COBOL?

Has the candidate demonstrated problem-solving skills?

Can the candidate work well within a team?

Does the candidate show a willingness to learn new technologies?

Next 20 minutes

Specific OHCO-Cobol. development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

What are the different types of data items in COBOL?

There are three types of data items in COBOL: Elementary, Group, and Table. Elementary items hold a single value, Group items are collections of related data, and Table items are arrays.

Describe the difference between the STRING and UNSTRING verbs in COBOL.

STRING is used to concatenate two or more strings into a single string, while UNSTRING is used to divide a single string into multiple strings.

What is the purpose of the COPY statement in COBOL?

The COPY statement is used to include contents of one file into another. It's similar to the #include directive in C/C++.

How would you handle errors in COBOL programs?

We handle errors in COBOL programs using a combination of the ON EXCEPTION and NOT ON EXCEPTION phrases with the relevant procedure calls, and by testing the return code or SQLCODE after a database operation.

What are the different file open modes in COBOL?

File open modes in COBOL include INPUT (for reading), OUTPUT (for writing), EXTEND (for appending), and I-O (for reading and writing).

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At this point, a skilled OHCO-Cobol. engineer should demonstrate strong problem-solving abilities, proficiency in OHCO-Cobol. programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with OHCO-Cobol..

What does this simple COBOL code do?
IDENTIFICATION DIVISION.
PROGRAM-ID. HELLO.
PROCEDURE DIVISION.
DISPLAY 'Hello, World!'.
STOP RUN.
This is a simple COBOL program that prints 'Hello, World!' to the console.
What does this COBOL code do?
IDENTIFICATION DIVISION.
PROGRAM-ID. ADDNUM.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 NUM1 PIC 9 VALUE 5.
01 NUM2 PIC 9 VALUE 3.
01 SUM PIC 9.
PROCEDURE DIVISION.
ADD NUM1, NUM2 GIVING SUM.
DISPLAY SUM.
STOP RUN.
This COBOL program adds two numbers, 5 and 3, and displays the result, which is 8.
What does this COBOL code do?
IDENTIFICATION DIVISION.
PROGRAM-ID. ARRAYS.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 ARRAY1 PIC 9(3) OCCURS 5 TIMES.
PROCEDURE DIVISION.
PERFORM VARYING ARRAY1 FROM 1 BY 1 UNTIL ARRAY1 > 5
DISPLAY ARRAY1
END-PERFORM.
STOP RUN.
This COBOL program declares an array of size 5 and displays each element of the array.
What does this COBOL code do?
IDENTIFICATION DIVISION.
PROGRAM-ID. THREADS.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 THREAD-ID PIC 9(3).
PROCEDURE DIVISION.
CALL 'CBL_THREAD_CREATE' USING THREAD-ID.
DISPLAY THREAD-ID.
STOP RUN.
This COBOL program creates a new thread and displays its ID.

Wrap-up questions

Final candidate for OHCO-Cobol. Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle OHCO-Cobol. application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

Describe the difference between static and dynamic calls in COBOL.

In a static call, the called program is a part of the calling program and it stays in memory throughout the execution of the calling program. In a dynamic call, the called program is not part of the calling program and it's loaded into memory at runtime.

How would you use the INSPECT statement in COBOL?

The INSPECT statement is used for string handling and it allows you to count the number of occurrences of a particular character, replace characters, or convert characters in a string.

What is the significance of the 88 level in COBOL?

The 88 level in COBOL is used to define condition names. It's a way of assigning a name to a condition that can be used in the procedure division for decision making.

OHCO-Cobol. application related

Product Perfect's OHCO-Cobol. development capabilities

Beyond hiring for your OHCO-Cobol. engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in OHCO-Cobol. projects, and can engage in multiple capacities.

OHCO-Cobol. Consultive assessments

OHCO-Cobol. Application Conversion Assessment OHCO-Cobol. Application Integration Assessment OHCO-Cobol. Data & Database Integration Assessment

Custom OHCO-Cobol. development projects

Custom OHCO-Cobol. App Conversion OHCO-Cobol. Custom App Development Process App UI Design for OHCO-Cobol. Facelifts

Hiring guide for OHCO-Cobol. Engineers

OHCO-Cobol. Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

What you’re looking to see on the OHCO-Cobol. engineer at this point.

OHCO-Cobol. Consultive assessments

Custom OHCO-Cobol. development projects