Index in cobol

INDEXED File Processing INDEX SEQUENTIAL ORGANIZATION: Records in this file are stored based on a key field which is part of record and this is also called as index. Records in this file are accessible in sequent- ial , dynamic & random mode. An index sequential file is concep- tually made up of two files, a data file and an index file. In contrast to the subscript, the SEARCH verb uses an index which is defined by name with the table. The actual setup of the index is done through COBOL. The index is limited in use. It must be used with the table that defined it and it must be controlled using either the PERFORM statement with the varying clause or the SET verb. hi, subscript : it indicates the no of occurences of the table and it is a normal cobol variable index : it indicates the offset from the begining of the table and by using the three cobol verbs (set ,serch,perform)we will do the operations on the index variable .we cannot display the index variable like normal cobol variable .we will not declare the index variable in the working storage section.

Index in COBOL Table. Index. Displacement of an element from the start of the table is known as an index. An index is declared with OCCURS clause using INDEXED BY clause. Using SET and PERFORM varying option the value of an index can be changed. Index and Subscript in COBOL are the very important concepts. Both are used to reference an array or table element in COBOL programs. By knowing the basic differences between the two, one can code the programs efficiently in performance point of view. An index is a displacement of element from the start of the table. An index is declared with Occurs clause using INDEXED BY clause. The value of index can be changed using SET statement and PERFORM Varying option. The compiler calculates the value contained in the index as the occurrence number (subscript) minus 1, multiplied by the length of the table element. Therefore, for the fifth occurrence of TABLE-ITEM, the binary value contained in INX-A is (5 – 1) * 8, or 32. The compiler calculates the value contained in the index as the occurrence number (subscript) minus 1, multiplied by the length of the table element. Therefore, for the fifth occurrence of TABLE-ITEM , the binary value contained in INX-A is (5 - 1) * 8, or 32. You can use an index-name to reference another table only COBOL Index About Index in TABLE ARRAY An index name (or just index) is an item that contains a value corresponding to an occurrence number of the table with which it is associated.

INDEXED File Processing INDEX SEQUENTIAL ORGANIZATION: Records in this file are stored based on a key field which is part of record and this is also called as index. Records in this file are accessible in sequent- ial , dynamic & random mode. An index sequential file is concep- tually made up of two files, a data file and an index file.

19 avr. 2008 [Débutant] Les indices et les index. Bonsoir, J'apprends actuellement de façon autodidacte COBOL, et j'ai des incompréhensions concernant les  Index in COBOL Table. Index. Displacement of an element from the start of the table is known as an index. An index is declared with OCCURS clause using INDEXED BY clause. Using SET and PERFORM varying option the value of an index can be changed. Index and Subscript in COBOL are the very important concepts. Both are used to reference an array or table element in COBOL programs. By knowing the basic differences between the two, one can code the programs efficiently in performance point of view. An index is a displacement of element from the start of the table. An index is declared with Occurs clause using INDEXED BY clause. The value of index can be changed using SET statement and PERFORM Varying option. The compiler calculates the value contained in the index as the occurrence number (subscript) minus 1, multiplied by the length of the table element. Therefore, for the fifth occurrence of TABLE-ITEM, the binary value contained in INX-A is (5 – 1) * 8, or 32. The compiler calculates the value contained in the index as the occurrence number (subscript) minus 1, multiplied by the length of the table element. Therefore, for the fifth occurrence of TABLE-ITEM , the binary value contained in INX-A is (5 - 1) * 8, or 32. You can use an index-name to reference another table only

INDEXED File Processing INDEX SEQUENTIAL ORGANIZATION: Records in this file are stored based on a key field which is part of record and this is also called as index. Records in this file are accessible in sequent- ial , dynamic & random mode. An index sequential file is concep- tually made up of two files, a data file and an index file.

COBOL: Difference between Subscript and index. Initially for both subscript and index, system has to calculate the location of a entry from the beginining of the  Specific index name can be used to reference a field from the table to which that index is assigned to index represents displacement value of the  An indexed file is a computer file with an index that allows easy random access to any record The COBOL language supports indexed files with the following command in the FILE CONTROL section. ORGANIZATION IS INDEXED. IBM PL/I   identification division. program-id. indexfile. environment division. input-output section. file-control. select fin assign to disk organization is indexed access is  +--------------------------------------------------------------------------------+ | ##### ####### # ##### ####### # ______ ______ ______ ______ 

Индекс - это перемещение элемента с начала таблицы. Индекса определяется с оговорку о возникновении используя индексированные by. Значение 

Index and Subscript in COBOL are the very important concepts. Both are used to reference an array or table element in COBOL programs. By knowing the basic differences between the two, one can code the programs efficiently in performance point of view. An index is a displacement of element from the start of the table. An index is declared with Occurs clause using INDEXED BY clause. The value of index can be changed using SET statement and PERFORM Varying option. The compiler calculates the value contained in the index as the occurrence number (subscript) minus 1, multiplied by the length of the table element. Therefore, for the fifth occurrence of TABLE-ITEM, the binary value contained in INX-A is (5 – 1) * 8, or 32.

The COBOL standards Include support for COBOL status variables. When a record is written that adds a duplicate to any index, and when a record is read 

cobol documentation: Binary SEARCH ALL. 05 word-table occurs maxwords times depending on wordcount descending key is wordstr indexed by wl-index. The COBOL standards Include support for COBOL status variables. When a record is written that adds a duplicate to any index, and when a record is read  As shocking as this may sound to some, there are many reasons beyond great need to bring COBOL back into the CIS curriculum. IBM estimates that there are 

cobol documentation: Binary SEARCH ALL. 05 word-table occurs maxwords times depending on wordcount descending key is wordstr indexed by wl-index. The COBOL standards Include support for COBOL status variables. When a record is written that adds a duplicate to any index, and when a record is read  As shocking as this may sound to some, there are many reasons beyond great need to bring COBOL back into the CIS curriculum. IBM estimates that there are  8 окт 2009 В начале 60-х гг. язык COBOL (Common Business Oriented Language) широко использовался для обработки деловой информации на