Intro to DatabasesRobert M. Vunabandi

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TodayDATABASES

What are they?

How are they structured?

Why do we use them?

What database can I use?

What is a database?

Database: Collection of data

Data: Piece of information

Database Management System (DBMS): Computer software application specialized in facilitating the interaction between databases and users. Many DBMS obey standards such as SQL.

Database Transaction: Interaction between database and users (usually initiated by users): e.g. reading & writing.

data

data

datadata

database

DBMSuser

Models of Database Management Systems (DBMS): Primitive Models

Flat DBMS Hierarchical DBMS

Network DBMS

Post Relational / Hybrid DBMS (NoSQL)

Models of Database Management Systems (DBMS)

Relational DBMS (SQL)

Why do you need a database / DBMS?

ReliabilityAtomicity

Consistency

Isolation (sequential)

Durability

Performance

Flexibility

Scalability

ReliabilityDBMS transactions are ACID.

PerformanceDBMS are optimized to perform tasks on data.

FlexibilityThe data structure can be easily altered.

ScalabilityDBMS can handle A LOT of data transactions.

What DBMS can you use?

What DBMS can you use?

What DBMS can you use?

What DBMS can you use?

Up Next:INTRODUCTION TO

FURTHER READINGS:

- Wikipedia: Databases- Database Models- Sitepoint: SQL vs. NoSQL- Wikipedia: SQL- ACID Concept- Stack Exchange: Why use DBs?- Youtube: Databases- Wikipedia: Outline of databases- Database schema templates- List of DBMS- MongoDB vs. MySQL article

Any questions?