9/25/2023 0 Comments Glwiz token codeA primary key column cannot contain NULL values, …įunctional Dependency in DBMS - javatpointįederated Database Management System Issues primary key in dbms javatpoint mean Types of Sources of Data in Data Mining in DBMSĭistributed Database System in DBMS - javatpoint ĭBMS MCQ (Multiple Choice Questions) - javatpoint However, such a key is not used as a primary key because, as we have discussed in …ĭifference between Centralized, Decentralized and … WebA table cannot have more than one primary key in a relational database, while there can be multiple unique keys per table. WebAn alternate is a secondary candidate key that is capable of identifying a row uniquely. However, the usage of a primary key is the same, but there is a difference between both keys. WebA unique key is used to remove the duplicity of values in a table. WebConsistency in database systems refers to the need that any given database transaction only change affected data in allowed ways.Data written to a database must be legitimate … DBMS Integrity Constraints - javatpoint Consistency in DBMS - javatpoint
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |