Describe five components of the DBMS environment and discuss how they relate to each other.In Cybersecurity terminology, a threat is defined as ___. (a) A weakness that threatens the confidentiality, integrity, or availability of data. (b) Something or someone that can damage, di...
Attribute domains are rules that indicate valid values for a field in a table in a geodatabase. They enforce data integrity by restricting the data values a user can add to a specific field. You can apply attribute domains to fields only if there was a definable set or range of specific...
to obtain CUSTOMERS rows related to ORDERS and maintain referential integrity, the relationship RCO must be traversed from child to parent. Similarly, to obtain ITEMS rows related to DETAILS, the relationship RID must be traversed from child to ...
What is your understanding of entity integrity versus referential integrity? Illustrate them with simple examples for ease in understanding the concepts. 1: Describing Polymorphism Rules In your own words, describe the following: 1.What is the difference bet...
1. Relational Model: This is the most commonly used database model. It organizes data into tables consisting of rows and columns, with relationships between tables defined through keys. The relational model enforces data integrity through constraints like primary keys, foreign keys, and normalization...
- Foreign Key:Foreign Key identifies a column with the primary key column of another table (parent table) for storing data. The values in the foreign key must be the values of primary key of other columns. Thus it ensures the data integrity – correct data. ...