A database management system (DBMS) stores and manages data and provides efficient ways to store, retrieve, and manipulate that data. The primary goals of a DBMS are to provide convenient and efficient ways to store and retrieve database information. It uses tables to represent entities, their relationships, and the data, with each table having multiple columns and rows. Some common DBMSs are Microsoft Access, which is designed for small home or business databases, and SQL Server, which is intended for larger server-based databases accessed remotely.

1. Database Management System(DBMS)
• A database management system (DBMS) is a
collection of interrelated data and a set of
programs to access those data.
• The collection of data, usually referred to as the
database, contains information relevant to an
enterprise.
• The primary goal of a DBMS is to provide a way
to store and retrieve database information that
is both convenient and efficient.

2. Characteristics
1. Real Entity: An entity can be a real world object, that can be easily identifiable. For
example in a school database , students, teachers , classes and offered courses
offered can be considered as entities .
2. Relation based structure: DBMS allows entities and relations between them to form
tables . A user can understand the architecture of a database just by seeing at the
table names.
3. Inaccessibility of data and application:
4. Lowest redundancy
5. Consistency
6. Query languages
7. ACID Properties used in transactions .A-Atomicity,
C-consistency, I-Issolation , D-Durability
1. Concurrent and multiuser access
2. Multiple views
3. Security

3. Advantages of DBMS
• Data Independence
• Efficient Data Access
• Data Security and integrity
• Reduced Development time

4. Disadvantages of DBMS
• Complexity
• Skilled Personnel
• Cost
• Lower Efficiency

5. Schema and Instance
• The overall design of the database is called the
database schema.
• The collection of the information stored in the
database at a certain moment is called an instance of
the database.

6. Data models
• The structure of a database is the data model: a
collection of conceptual tools for describing data, data
relationships, data semantics, and consistency
constraints.
• To illustrate the concept of a data model, we outline
two data models in this section: the entity-relationship
model and the relational model. Both provide a way to
describe the design of a database at the logical level

7. Entity Relationship Data model
The entity-relationship (E-R) data model is based on a perception of a real world
that consists of a collection of basic objects, called entities, and of relationships
among these objects. An entity is a “thing” or “object” in the real world that is
distinguishable from other objects. For example, each person is an entity, and
bank accounts can be considered as entities.
customer accountDepositer

8. Relational Data models
• The relational model uses a collection of tables to represent both data and the
relationships among those data. Each table has multiple columns, and each column
has a unique name. It uses the unique key called primary key to identify record
uniquely.

9. Microsoft access
• Microsoft Access is a Relational Database
Management System (RDBMS), designed
primarily for home or small business usage.
• Access is known as a desktop database system
because it's functions are intended to be run
from a single computer. This is in contrast to
a server database application (such as SQL
Server), where it is intended to be installed on
a server, then accessed remotely from
multiple client machines.

10. BASICS
• A Table is an arrangement of data in a row
and column.
• A field is a column in a table that contains
particular information about a record.
• A Primary Key is a field uniquely identifies
every record in a table.
• A Record is a set of information stored about a
particular entry.

11. • Forms are used to customize formats for
adding, editing, deleting or displaying data.
• Queries display information from one or more
tables based on a selection criteria.
• Reports contain data from one or more tables
and databases that can be printed. Selective
fields and records can be displayed in a report.
• Macros perform a fixed set of tasks every
time they are run.

12. All about Tables
• Opening up MS Access and creating a table.

13. Table Design Toolbar
Creating Fields
Defining data types

14. • Text data type is used to store all valid printable
characters. Default size is 255.
• Memo data type is used to create a text field in which
size of the values can vary widely . Like to store
paragraph its size is 6500 characters.
• Number data type enables you to enter numeric data.
• Currency data type enables you to enter monetary
data.
• Date/Time data type can store date and time values.
• Yes/No data type, also known as a logical type, stores
data that can have only two values.

15. • Auto number data type stores an integer that
is incremented or decremented automatically
as you add or delete records.
• OLE object type can store any type of object
such as video clip, a picture or a word
document.
• Lookup Wizard is a field that displays a list
that looks up data from an existing table or
from a fixed set of user-defined values.