Database Management System for Undergraduate

1. AJAYI, Olusola Olajide
CSC Dept., AAU Akungba
olusola.ajayi@aaua.edu.ng
08137044500 / 07056433798

2.  Chap 1: Database Concepts
 Common Concepts
 Connecting to Databases

3.  Data/Data Item:
It is regarded as the smallest element
in a database system.
It is the smallest indivisible element or
component in a database system.

4.  Database:
This can be viewed as the collection of
related data.
It can also be said to be a repository
of data.
…base

5.  Database Management System:
This is a software that manages
database files.
It is a shared and integrated computer
structure that stores data.
Operational Data
…..inputs
Meta Data
…..query generated data
i.e. data about data
Output Data
…..outputs i.e.
Report etc.

6.  ROW: Is defined as a collection of data items belonging to an entity. It
represents RECORD of such an entity.
ID Matric Name Sex Reg.
No
Age
001 140404001 Ade Peters M 789 45
002 140404002 Anthony Joshua M 790 27
003 140404003 EkwesiliCecilia F 791 56
004 140404004 Aisha Buhari F 792 63
Record
belonging
to AJ!

7.  COLUMN: Is defined as a collection of data items belonging to
different entities. It represents FIELD in such entities.
ID Matric Name Sex Reg.
No
Age
001 140404001 Ade Peters M 789 45
002 140404002 Anthony Joshua M 790 27
003 140404003 EkwesiliCecilia F 791 56
004 140404004 Aisha Buhari F 792 63
Matric
FIELD
common to
all entities

8.  TABLE: Is defined as a collection of related RECORDS belonging to
entities in such a table/file.
ID Matric Name Sex Reg.
No
Age
001 140404001 Ade Peters M 789 45
002 140404002 Anthony Joshua M 790 27
003 140404003 EkwesiliCecilia F 791 56
004 140404004 Aisha Buhari F 792 63 TABLE

9.  DATABASE: Is defined as a collection of logically related
TABLES/FILES.
ID Matric Name Sex Reg.
No
Age
001 140404001 Ade Peters M 789 45
002 140404002 Anthony Joshua M 790 27
003 140404003 EkwesiliCecilia F 791 56
TABLE 1 /
FILE 1:
studfile
ID Matric Score Grade
001 140404001 67 B
002 140404002 54 C
003 140404003 89 A
TABLE 2 /
FILE 2:
csc212ex
…both stored
into one (1)
DATABASE

10.  Instance: This refers to the content of a
particular database at a particular
point in time.
It can simply be regarded as the value of
a variable in a database.

11.  Schema: This refers to the logical
structure of the database.
It exists in two forms: Physical Schema
& Logical Schema.

12.  Physical schema described the
design of a database at physical
level e.g. storage of records unto
the database.

13.  Logical schema discusses the design
of a database at logical level e.g.
illustrating the relationship among /
between records/tables in a
database.

14.  …using MS-ACCESS
So, put on your system NOW and LOAD your
MS-ACCESS package.

15.  Creating Database (ourdb) &Tables (scorefile)
i. Matric_Data (containing matricno, dept, fac)
ii. Bio_Data (containing name, dob, soo, sex,
matricno)
iii. Testfile (containing matricno, csc301t_score,
csc303t_score, csc305t_score)
iv. Examfile (containing matricno, csc301e_score,
csc303e_score, csc305e_score)

16. i. Populate each table with 10 related records
ii. Generate MatricList based on Faculty
iii. Generate MatricList based on Department
iv. Generate MatricList based on Gender &
State
v. ComputeTOTAL and AVERAGE forTestfile
and Examfile
vi. Generate Matricno,Totaltestscore and
Totalexamscore for each candidate
vii. Generate a detail report showing all records

17.  Using the existing database (ourdb), create a
table called ELIGIBILITYfile such that it
contains the fllg fields:
 Name
 MatricNo
 Year of Birth
 SOO
 Nationality
 Region / Continent

18.  Populate the table with 15data
 From the data, fire the following queries:
 Candidates <=40 as eligible
 Candidates from Asian Countries as not eligible
 All Candidates from Africa as eligible except those
from the Southern Africa
 All Candidates from Nigeria as eligible except those
from Borno State
 Generate a Report that shows all the candidates
that applied
 Generate a Report that presents all candidates
from Africa

19.  TAKE HOME 1
 Create a database named STUDDB containing
STUDREG file/table (registration data of all
students in AAUA across the different faculties).
Populate the table with 30 data.
 Create a sister table, called STUDPAY, containing
students’ payment information. Also populate this
with corresponding 30 data.

20.  TAKE HOME 2
 Consider a Customer and a Producer. Ponder
computationally and come up with the necessary
fields for both entities for the design of your
tables. Further work on these entities by
populating each with 20 records.