Database Isolation Levels

Database isolation levels define how visible changes made by one transaction are to others, balancing accuracy and performance. Lower levels, like Read Uncommitted, allow transactions to see unfinalized updates, risking inconsistent data. Higher levels, such as Repeatable Read or Serializable, ensure transactions see stable data, preventing others from altering or seeing uncommitted changes during their process. These settings help manage concurrency, ensuring data accuracy without compromising system efficiency. Choosing the right level depends on the application's need for data consistency versus performance.