Unit 3 research
Some examples of database naming conventions are; underscores: the elements of a name are separated by underscores to improve readability. substitutions: represented by italicized characters, indicating that the element is composed of characters provided by the user. constants: represented by non-italicized characters. brackets: indicate that the enclosed character is included only under specific conditions as defined.
Oracle database object names are limited to a maximum of 30 characters with the exception of database names which are 8 characters.
Database object names are limited to a maximum of 30 characters.
Object names contain only the letters [a-z] [0-9] and underscore Î_Ì.
Object names must start with a letter.
I think the convention that makes the most sense to me is the one limiting the amount of characters to a maximum of 30. If more than 30 characters where allowed name would become very long and confusing greatly increasing the chance of programming errors when creating the database.
An entity-relationship diagram is a specialized graphic that illustrates the relationships between entities in a database. ER diagrams often use symbols to represent three different types of information. Boxes are commonly used to represent entities. Diamonds are normally used to represent relationships and ovals are used to represent attributes
A declarative language is a type of programming language where you describe what goal a task has, but without writing the code to accomplish the task. HTML, SQL and Prolog are all examples of declarative languages. Procedural programming is a list or set of instructions telling a computer what to do step by step and how to perform from the first code to the second code. Procedural programming languages include C, Go, Fortran, Pascal, and BASIC.
In a procedural language you tell the computer each step to perform. The computer performs those steps and, if they are well written, you will end up with our desired
Oracle database object names are limited to a maximum of 30 characters with the exception of database names which are 8 characters.
Database object names are limited to a maximum of 30 characters.
Object names contain only the letters [a-z] [0-9] and underscore Î_Ì.
Object names must start with a letter.
I think the convention that makes the most sense to me is the one limiting the amount of characters to a maximum of 30. If more than 30 characters where allowed name would become very long and confusing greatly increasing the chance of programming errors when creating the database.
An entity-relationship diagram is a specialized graphic that illustrates the relationships between entities in a database. ER diagrams often use symbols to represent three different types of information. Boxes are commonly used to represent entities. Diamonds are normally used to represent relationships and ovals are used to represent attributes
A declarative language is a type of programming language where you describe what goal a task has, but without writing the code to accomplish the task. HTML, SQL and Prolog are all examples of declarative languages. Procedural programming is a list or set of instructions telling a computer what to do step by step and how to perform from the first code to the second code. Procedural programming languages include C, Go, Fortran, Pascal, and BASIC.
In a procedural language you tell the computer each step to perform. The computer performs those steps and, if they are well written, you will end up with our desired