Introduction
No idea how relational database systems are constructed? Did you know that they underpin the majority of the managed data storage in computer systems? This unit has been designed to give you an overview of the developmental lifecycle for a database system, explaining the importance of data analysis and highlighting how database development differs from traditional software development.
Author(s): The Open University

Introduction
Access to healthcare is important to all of us. Did the arrival of state medicine in the twentieth century mean that everyone had access to good medical services? If you fell sick in 1930 where could you get treatment – from a GP, a hospital, a nurse? This unit shows that in the early twentieth century, access to care was unequally divided. The rich could afford care; working men, women and children were helped by the state; others had to rely on their own resources.
Author(s): The Open University

3.1 Introduction
Access to healthcare is important to all of us. Did the arrival of state medicine in the twentieth century mean that everyone had access to good medical services? If you fell sick in 1930 where could you get treatment – from a GP, a hospital, a nurse? This unit shows that in the early twentieth century, access to care was unequally divided. The rich could afford care; working men, women and children were helped by the state; others had to rely on their own resources.
Author(s): The Open University

5.1 Introduction
Access to healthcare is important to all of us. Did the arrival of state medicine in the twentieth century mean that everyone had access to good medical services? If you fell sick in 1930 where could you get treatment – from a GP, a hospital, a nurse? This unit shows that in the early twentieth century, access to care was unequally divided. The rich could afford care; working men, women and children were helped by the state; others had to rely on their own resources.
Author(s): The Open University

Introduction
Without it we are dead! Water is essential, but what processes must it go through to become fit for human consumption? This unit will guide you through the continuous cycling of water between land, open water surfaces and the sea before moving on to an overview of the water treatment and supply process.
Author(s): The Open University

1.1 Introduction
Without it we are dead! Water is essential, but what processes must it go through to become fit for human consumption? This unit will guide you through the continuous cycling of water between land, open water surfaces and the sea before moving on to an overview of the water treatment and supply process.
Author(s): The Open University

3.1 Introduction
Without it we are dead! Water is essential, but what processes must it go through to become fit for human consumption? This unit will guide you through the continuous cycling of water between land, open water surfaces and the sea before moving on to an overview of the water treatment and supply process.
Author(s): The Open University

4.1 Introduction
Without it we are dead! Water is essential, but what processes must it go through to become fit for human consumption? This unit will guide you through the continuous cycling of water between land, open water surfaces and the sea before moving on to an overview of the water treatment and supply process.
Author(s): The Open University

Introduction
In this unit you will be introduced to a variety of Delacroix’s work and see how his paintings relate to the cultural transition from Enlightenment to Romanticism. You will study Delacroix’s early career, his classical background, the development of Romantic ideas and their incorporation into his work. You will have the opportunity to study some of his most important paintings and compare them to works favouring a Neoclassical approach. You will also be able to see how his themes, subjects
Author(s): The Open University

Introduction
The sun dominates our lives by defining our day, but how much do you know and understand about it? This unit will help you to explore the workings of the brightest star in our universe looking at its structure and the main processes taking place within it. You will also examine the phenomena of sun spots.
Author(s): The Open University

Introduction
Models are mechanisms for communication. This unit looks at what a model is and what the process of modelling is about. The techniques discussed here are applicable to a wide range of systems and have one thing in common: they are all commonly used diagramming techniques. The five techniques are: data flow diagrams, use case modelling, activity diagrams, entity–relationship diagrams and state machines.
Author(s): The Open University

8.1 Introduction
Models are mechanisms for communication. This unit looks at what a model is and what the process of modelling is about. The techniques discussed here are applicable to a wide range of systems and have one thing in common: they are all commonly used diagramming techniques. The five techniques are: data flow diagrams, use case modelling, activity diagrams, entity–relationship diagrams and state machines.
Author(s): The Open University

Introduction
This extract is concerned primarily with the chemistry that underpins the operation of the three-way catalytic converter that is placed in the exhaust systems of motor vehicles in order to reduce the emissions of primary pollutants: carbon monoxide, oxides of nitrogen and volatile organic compounds, including hydrocarbons. Discussion of the various effects of these pollutants and the consequent introduction and refinement of ‘automotive emission regulations’ has not been included, nor is the
Author(s): The Open University

4.4.1 Introduction
This extract is concerned primarily with the chemistry that underpins the operation of the three-way catalytic converter that is placed in the exhaust systems of motor vehicles in order to reduce the emissions of primary pollutants: carbon monoxide, oxides of nitrogen and volatile organic compounds, including hydrocarbons. Discussion of the various effects of these pollutants and the consequent introduction and refinement of ‘automotive emission regulations’ has not been included, nor is the
Author(s): The Open University

4.5.1 Introduction
This extract is concerned primarily with the chemistry that underpins the operation of the three-way catalytic converter that is placed in the exhaust systems of motor vehicles in order to reduce the emissions of primary pollutants: carbon monoxide, oxides of nitrogen and volatile organic compounds, including hydrocarbons. Discussion of the various effects of these pollutants and the consequent introduction and refinement of ‘automotive emission regulations’ has not been included, nor is the
Author(s): The Open University