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Sistemas de Informação

Marta Barros

Gestão Hoteleira

Sistemas de Informação

Base de Dados

No dia de Hoje O termo Base de Dados é aplicado principalmente para fazer referência a Whatever you want! Base de Dados Informáticas Isto é,Conjunto de dados estruturados, manipulados usando um Sistema de Gestão de Bases de Dados (SGBD) ou Database System (DBMS)

'Your content is liked, but it engages much more if it is interactive

Capacidade de processar grandes quantidades de informação, tais como:

  • Sistemas de armazenamento de operações bancárias;
  • Base de dados empresariais com vários tipos de informação (ex:Vendas, funcionários, clientes, fornecedores, faturação);
  • Sistemas de reservas de companhias de aviação;
  • Sistemas de companhias de seguros.

Um sistema SGBD permitem criar e manipular Base de Dados em que os dados são estruturados com independência relativamente aos programas de aplicação que os manipulam.

Para manipular a informação foram criadas ferramentas do tipo SGBD)

Sistemas de Gestão de Base de Dados (SGBD)

  • Grande porte
Exemplo: ORACLE, Microsoft SQL Server, Ingres, Informix e DB2;
  • Uso pessoal (doméstico) e ou de pequenas empresas.
Exemplo: MYSQL, Dbase, FoxPro e o Microsoft Acess

Dividem-se em dois grandes grupos:

Exemplo de SGBD

Características de um SGBD

  • Independência dos dados;
  • Redundância controlada;
  • Integridade dos dados;
  • Abstração dos dados;
  • Acesso simultâneo dos dados;
  • Facilidade de obtenção de informação actualizada;
  • Diferentes vistas de base de dados.

4. Hypothesis

Funções de um SGBD

Segurança

  • deve proteger a BD de utilizadores não autorizados;
Integridade dos dados
  • Proteger a BD de utilizadores, evitando que estes executem tarefas que ponham em risco a integridade de informação (não permitindo , por exemplo, que se apaguem dados de um sítio que são necessários noutro sítio da BD);

4. Hypothesis

Vantagens dos SGBD´S:

  • flexibilidade da Informação
  • Maior organização
  • Independentes dos programas de aplicação

Tabelas Normalizadas

Tabelas não Normalizadas

Diagrama E-R

Etapas do Método Etapa 1- Diagramas E-R Analise de necessidades de informação da Empresa e elaboração do Modelo E-R.Etapa 2- Tabelas não Normalizadas: Transformação do Diagrama E-R num conjunto de Tabelas Etaapa 3- Tabela Normalizadas: Normalização das Tabelas

Para descrevermos a nossa aplicação em termos lógicos (Desenho Lógico ), vamos utilizar o Modelo Relacional, também chamado Modelo E-R (Entidade- Relação)

Modelo Lógico

Entidade Automóvel

FIat RenaultFordBMW

Entidade cão

Pastor Alemão Boxer Setter Dobermann

Exemplo:

Entidade: objetos ou conceitos que possuem um conjunto de caracteristicas comuns compostas ou caracterizadas por um conjunto de atributos. COrresponde a uma tabela de uma Base d e Dados.

Alguna Conceitos Defenições

Modelo E.R

Conclusão

2. Introduction

Interactivity and animation can be your best allies in making the content fun.

Did you know that Genially allows you to share your creation directly, without the need for downloads?Ready for your audience to view it on any device and spread it anywhere.

Background

5. Theoretical Framework

Use images in your presentation. And use this space to describe it. To insert an image, you can upload it from your computer or use the resources found within the tool.

To create your interactive image... You can use a photograph or an illustration as a base. The important thing is that it is very attractive to catch the attention of your audience.

6. Methodology

Population and sample

In this space, it is also advisable to establish the importance of the topic, discuss previous and current research in the field, and identify the problem.We also recommend that interactivity and animation be present in all your creations, regardless of their type.

Field work

That's why, at Genially, we create our designs to make understanding and learning easier, so you can level up with interactivity and turn your content into something that adds value and hooks.

6. Methodology

Instruments

Interactivity and animation can make even the most boring content fun. In Genially, we also create our designs to facilitate understanding and learning, so that you level up with interactivity and turn your content into something that brings value and engages.

Procedures and variables

When carrying out a presentation, one must pursue two objectives: conveying information and avoiding yawns. To achieve this, it may be a good practice to create an outline and use words and concepts that aid in the assimilation of the content.

7. State of the issue

Interactive Visual Communicationstep by step:

Visual content is a cross-cutting and universal language, like music. We are able to understand images from millions of years ago, even from other cultures.

Plan the structure of your content. Give visual weight to the key points and main elements.

Define secondary messages with interactivity.

Set a flow through the content. Measure the results.

8. Development

Interactivity and animation can be your best allies in making content fun.

50%

We are visual beings

Interactivity and animation can be your best allies when it comes to creating tables, infographics, or charts that help provide context to the topic or unit, as well as simplify information to make it more understandable. We are visual beings and find it easier to 'read' images than to read written text.

8. Development

Chapter 1. Write a great title here

Did you know that Genially allows you to share your creation directly, without the need for downloads? Ready for students to view it on any device and learn anywhere.

'Your content is well-liked, but only captivating if it's interactive'

8. Development

If your genially includes data that are difficult to explain or understand, do not hesitate: including graphics will help better understand each data and give it meaning.

70%

Use graphics in your presentation...

8. Development

Use tables and infographics

Visual communication is a key tool. We find it easier to 'read' images than to read written text. That's why disciplines like Visual Thinking facilitate knowledge organization through the use of images, graphics, infographics, and simple drawings.

8. Development

1.1. Write an awesome subtitle here

With Genially templates, you can include visual resources to engage the class from minute 1. You can also highlight key content to facilitate its assimilation and even embed external content that surprises and provides more context to the topic: videos, photos, audios... Whatever you want!

8. Development

Statistics convey professionalism and a greater sense of credibility.Bonus: always try to include the source.

  • You can create an outline to summarize the content.
    • Use words that help consolidate students' mental structures.
    • Numbered ideas are much more memorable than bullet point lists.
  • You can delve into the content in more detail through your oral presentation.
    • We recommend that you practice and rehearse: the best improvisation is always the most prepared one!
  • Show enthusiasm, smile, and maintain eye contact with your class.

85% of purchases are emotional

9. Conclusions

Generate experienceswith your content

You can create an outline to synthesize the content and use words that will be etched into your audience's brains. Numbered ideas are much better remembered than bullet lists.

Measure results and experiment

You can develop the content in more detail through your oral presentation. We recommend that you train your voice and practice: the best improvisation is always the most rehearsed!

Activate and amaze your audience

Show enthusiasm, smile, and maintain eye contact with your audience: 'The eyes, chico. They never lie'. This will help you make a 'match' with your audience. Leave them speechless!

Discussion

Last Name Last Name, Author (20XX). Place of publication: Publisher.

Last Name Last Name, Author (20XX). Place of publication: Publisher.

Last name Last name, Author (20XX). Place of publication: Publisher.

Last Name Last Name, Author (20XX). Place of Publication: Publisher.

Last Name Last Name, Author (20XX). Place of publication: Publisher.

  • Book Title
  • Book Title
  • Book Title

10. Bibliography

  • Book Title

Bibliographic references

  • Book Title

Last Name Last Name, Author (20XX). Place of publication: Publisher.

  • Book Title

11. Figures and Tables

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Graph 1

Table 1

Graph 2

Figure 6

Figure 7

Figure 8

12. Attachments

Attachments

If your thing is to capture the attention of your audience, make a 'match' with your public and leave everyone speechless, this Genially template is for you. Visual content has an incredible informative and illustrative power. That's why including videos and images in your introduction is essential.

Attachment 1

Contextualize your topic with a great subtitle here

Annex 2

Contextualize your topic with a awesome subtitle here

Annex 3

Contextualize your topic with a great subtitle here

Write a cool title here

The visual content is a transversal, universal language, like music. We are able to understand images from thousands of years ago, even from other cultures. We don't like boring. We don't want to be repetitive. Communicating in the same way is boring and doesn't engage. We do it differently. We sabotage boredom. We create what the brain likes to consume because it stimulates it.

Write a cool title here

The visual content is a transversal, universal language, like music. We are able to understand images from thousands of years ago, even from other cultures. We don't like boring. We don't want to be repetitive. Communicating in the same way is boring and doesn't engage. We do it differently. We sabotage boredom. We create what the brain likes to consume because it stimulates it.