Explain Different Types of Constraints in Dbms
High-cardinality refers to columns with values that are very uncommon or unique. A Network database management system is a system where the data elements maintain one to one relationship 1. Dbms Integrity Constraints Javatpoint Constraints in the databases can be categorized into 3 main categories. . The UNIQUE and PRIMARY KEY constraints both provide a guarantee for uniqueness for a column or set of columns. High-cardinality column values are typically identification numbers email addresses or user names. Primary Key is a column or group of columns in a table that uniquely identify every row in that table. High-cardinality normal-cardinality and low-cardinality. These are called as schema-based constraints or Explicit constraints. Super Key A super key is a group of single or multiple keys which identifies rows in a table. UNIQUE Constraint enforces a column or set of columns to have unique values. This c...