For example, someone might be labeled beautiful, charming, funny, or intelligent. When the PK of one entity does not contain the PK of a related entity, the relationship is ____. Making sure all ____ are identified is a very important part of a database designer’s job. Ideally, an entity identifier is composed of ____ attribute. Attribute is defined as a quality or characteristic of a person, place or thing. We know an attribute is a quality or characteristic of a person, place, or thing.

First create conceptual schema and than creat relational model .. For example, the STUDENT entity includes, among many others, the attributes STU_LNAME, STU_FNAME, and STU_INITIAL. In the original Chen notation, attributes are represented by ovals and are connected to the entity rectangle with a line. Each oval contains the name of the attribute it represents. In the Crow’s Foot notation, the attributes are written in the attribute box below the entity rectangle.

A ____ relationship is one in which a relationship can exist between occurrences of the same entity set. RecursiveA ____ relationship is one in which a relationship can exist between occurrences of the same entity set. Composite Attributes- Composite attributes are those attributes which are composed of many other simple attributes. An attribute composed of many other attribute is called as composite attribute.

You can use contents in this blog only for personal use. Reproduction and republishing of any contents from here to any other websites or blogs is strictly prohibited. The term “____” is used to label any condition in which one or can cats eat cashews more optional relationships exist. The ____ type of attribute cannot be created in a DBMS. Some ____ database modeling concepts can be expressed only using the Chen notation. In an ER diagram, primary keys are indicated by ____.

A ____ entity has a primary key that is partially or totally derived from the parent entity in the relationship. An attribute that can be divided into smaller independent attribute is known as composite attribute. For example, assume Student is an entity and its attributes are Name, Age, Address and Phone no. Here the address of student can be further divide into House no, city and so on.

Simple attribute can not be further sub divided. Example, for entity employee age, salary can be simple attribute. An attribute having many value, for an entity is called multi-valued attribute. A composite attribute can be further subdivided to yield additional attributes.

The Internet has many places to ask questions about anything imaginable and find past answers on almost everything. The ERD represents the ____ database as viewed by the end user. A ____ attribute is one that cannot be subdivided.