Interview questions on file handling in cobol

Sequential files: The records are stored in the file in the same order in which they are entered. Here, the records can be accessed only sequentially. To process any record, one has to read all its preceding records. Further, records cannot be inserted or deleted. Sequential files are simplest to handle, they are highly inflexible as they do not facilitate insertion and deletion of records.

File opened with Extend Mode appends the writing records at the end of the file. An index sequential file is concep- tually made up of two files, a data file and an index file.

Though the records are stored in the order in which they are entered, a sorted index is maintained which relates the key value to the position of the record in the file and hence provides a way to access the records both sequentially and randomly. Machine Learning. Data Structures. Operating System. Computer Network. Compiler Design. Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security.

C Programming. Control System. Data Mining. Data Warehouse. Javatpoint Services JavaTpoint offers too many high quality services. Number zero raised to power zero. Division by zero Number zero raised to negative power number. The compiler and programmer use this division to identify the program. Environment Division: In the Environment division, we can define the input and output files of the program.

This division is optional and mainly used to describe the system's environment in which the program will run. Data Division: The data division contains information about the variables and data items used in the program.

It also defines the variable names, their lengths, decimal locations, and the information about the storage formats. From this division, the program starts the execution. The procedure division is the logical section of the program. Here all the business logic is written. In cloud migration projects, you will find three terms IP address, Port and Subnet to get access to cloud.

Here explained the differences among these. Directories are pretty much needed in Linux to store files and create sub-directories. Here you will know how to work with these directories.

These are popular for the year Share this:. Like this: Like Loading Therefore, the file must be opened in I-O mode for rewrite functionality. Varying statement and it is nothing but search without ALL. Processing of files is determined by successful execution of an OPEN statement. A literal is a data item which consists value by itself.

It cannot be referred by a name. They are constant data items. There are two types of literals:. Skip to content. Report a Bug.