managing databases, Database Management System

Assignment Help:
10A.53

Code an Oracle Database trigger to enforce the constraint that an employee can
never change his or her department.

10A.54

Code an Oracle Database trigger to allow the deletion of a department if it
only has one employee. Assign the last employee to the Human Resources

department.

10A.55

Design a system of triggers to enforce the M-M relationship. Use Figure 10A-53 as an
example, but assume that departments with only one employee can be deleted.

Assign the last employee in a department to Human Resources.

Related Discussions:- managing databases

Define aggregate functions, Define Aggregate functions and what aggregate f...

Define Aggregate functions and what aggregate functions supported by the MySQL To calculate a summary value from a set of individual values and uses one of the functions known

Explain data abstraction, Explain data abstraction? Data abstraction Da...

Explain data abstraction? Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is

What is dml, What is DML (Data Manipulation Language)? This language th...

What is DML (Data Manipulation Language)? This language that enable user to access or manipulate data as organised by appropriate data model. Procedural DML or Low level: DM

Demonstrate the uml model, Demonstrate the UML model Using UML, it is p...

Demonstrate the UML model Using UML, it is possible to generate code in any of the programming language from UML model (called forward engineering) and rebuild a model from an

Define sequence, Define Sequence A sequence is a set of integers 1, 2, ...

Define Sequence A sequence is a set of integers 1, 2, 3 that are generated in order on demand. Sequences are regularly used in databases because lots of applications require ev

Convert erd to rdm model, Regional Gardens has many nurseries, including Wa...

Regional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively. Additi

Oracle/sql, can you create a database for me in oracle/sql

can you create a database for me in oracle/sql

Hashing.., various techniques of hashing?

various techniques of hashing?

Describe the objective of structural diagrams, Describe the objective of St...

Describe the objective of Structural Diagrams The main objective of structural diagram is to visualize, construct, specify and document static aspects of a system. Their eleme

What are the storage types, What are the storage types? The storage typ...

What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd