Felülírások

Felülírások is a Hungarian term that translates to "overwrites" in English. It is most commonly used in the context of computer programming and data management to describe the act of replacing existing data with new data. This can occur in various scenarios, such as updating a file, modifying a database record, or reassigning a variable in a program.

In programming, when a variable is assigned a new value, the previous value is overwritten. This is a fundamental concept in most programming languages. For example, if a variable `x` is initially set to 5 and later reassigned to 10, the value 5 is overwritten by 10. Similarly, when a function modifies a global variable or a parameter passed by reference, it can overwrite the original data.

In file systems, an overwrite operation means that the contents of an existing file are replaced with new data. This can happen when a user saves a document with the same name as an existing file, or when a program writes data to a file. In some cases, the overwrite is intentional and expected, while in others, it can be an accidental data loss event.

Database management systems also utilize the concept of overwrites when updating records. When a record is modified, the old data within that record is replaced by the new data provided in the update operation. This ensures that the database reflects the most current information. The term "felülírások" encapsulates these instances of data replacement across different computational contexts.