APPLICATION 2.4 Projectile motion About 400 yr ago, the physicist Galileo observed that certain projectiles follow a parabolic path. For instance, if a cannon fires a shell at a 30 degree angle with a speed of 250 feet per second, then the path of the shell is modeled by the equation , where h is the elevation of the shell trajectory and d is the corresponding horizontal distance from the cannon when the elevation is h. 1. Does the graph of this equation open up or down? How did you determine this? 2. Describe what happens to the projectile as time passes. 3. Use the quadratic equation to determine at what distance from the cannon the shell hits the ground. 4. Will the shell be at a high point or be at a low point at the middle of the trajectory? How do you know? 5. What is the highest elevation the shell will attain? 6. When the shell is at its highest, how far (horizontally) will it be from the cannon? 7. What is the point of the vertex? How does this number relate to your answers in parts e. and f? 8. How many solutions are there to the equation ? How do you know? 9. What do the solutions represent? MAT/117 2 2 32 0.577 1.5(250) hdd =- 2 2 32 0.5770 1.5 dd v -= Running Head: DATABASE MANAGEMENT 1 DATABASE MANAGEMENT 2 Advanced Database Systems(CS352-1901A-01) Database Management Charles Williams 1/8/2019 Table of Contents Table of Contents…………………………………………………………………………………………………………………………………….2 The Database Models, Languages, and Architecture 3 Database System Development Life Cycle 5 Database Management Systems 6 Advanced SQL 7 Web and Data Warehousing and Mining in the Business World 8 References 9 Database management It is important that a formal design methodology is used as it provides a mathematical approach to coming up with a reliable database that consolidates all the environments that use the database. A design methodology helps as it provides a way in which the whole designing and development can be done with minimum errors. The design methodology helps in identifying the requirements, the specifications and design levels of the database and data warehouse up for development. The planning stage of the consolidated data base is very important as it involves the coming up with plans that will guide the development of the database (Mabogunje, 2015). The plans help in managing quality, time, risks and other related issues that might affect the design and development of the database and eventually the data warehouse. The three layers of the 3-level ANSI-SPARC architecture include; a physical schema which is responsible for defining how data is to be stored, a conceptual schema which is responsible for indexing and relating data, and the external schema which is responsible for showing how informatio.

1. APPLICATION 2.4
Projectile motion
About 400 yr ago, the physicist Galileo observed that certain
projectiles follow a parabolic path. For instance, if a cannon
fires a shell at a 30 degree angle with a speed of 250 feet per
second, then the path of the shell is modeled by the equation
,
where h is the elevation of the shell trajectory and d is the
corresponding horizontal distance from the cannon when the
elevation is h.
1. Does the graph of this equation open up or down? How did
you determine this?
2. Describe what happens to the projectile as time passes.
3. Use the quadratic equation to determine at what distance
from the cannon the shell hits the ground.
4. Will the shell be at a high point or be at a low point at the
middle of the trajectory? How do you know?

2. 5. What is the highest elevation the shell will attain?
6. When the shell is at its highest, how far (horizontally) will it
be from the cannon?
7. What is the point of the vertex? How does this number relate
to your answers in parts e. and f?
8.
How many solutions are there to the equation ? How do you
know?
9. What do the solutions represent?
MAT/117
2
2
32
0.577
1.5(250)
hdd

3. =-
2
2
32
0.5770
1.5
dd
v
-=
Running Head: DATABASE MANAGEMENT
1
DATABASE MANAGEMENT
2
Advanced Database Systems(CS352-1901A-01)
Database Management
Charles Williams
1/8/2019
Table of Contents
Table of
Contents………………………………………………………………
…………………………………………………………………….2
The Database Models, Languages, and Architecture 3

4. Database System Development Life Cycle 5
Database Management Systems 6
Advanced SQL 7
Web and Data Warehousing and Mining in the Business World
8
References 9
Database management
It is important that a formal design methodology is used as it
provides a mathematical approach to coming up with a reliable
database that consolidates all the environments that use the
database. A design methodology helps as it provides a way in
which the whole designing and development can be done with
minimum errors. The design methodology helps in identifying
the requirements, the specifications and design levels of the
database and data warehouse up for development. The planning
stage of the consolidated data base is very important as it
involves the coming up with plans that will guide the
development of the database (Mabogunje, 2015). The plans help
in managing quality, time, risks and other related issues that
might affect the design and development of the database and
eventually the data warehouse.
The three layers of the 3-level ANSI-SPARC architecture
include; a physical schema which is responsible for defining
how data is to be stored, a conceptual schema which is
responsible for indexing and relating data, and the external
schema which is responsible for showing how information was
presented. The 3-level ANSI-SPARC type of architecture is
designed to guard and guide data change. The primary function
of the first layer is to define how data is stored. It is important
to note that there can be changes in the physical schema and the
changes will not affect how external applications will interact
with the stored data (Pokorný, 2018). The second layer’s
primary function is to provide a consolidated view of a
database. The third layer’s primary function is to define richer
APIs and it can do so without necessarily having to change the
underlying storage mechanisms in place. The 3-level ANSI-

5. SPARC architecture helps in promoting data independence
which in turn helps save time in the long run through the
conceptual schema which emphasizes data mapping.
Data administrator and database administrator
A data administrator is an individual whose function is to
gather data requirements, analyze data as well as design data
and classify data types. They two primary roles of a data
administrator include; coming up with data standards that will
be applied in databases, and coming up with policies that will
dictate on data security, data access, data usage, dataflow well
as data authorization in an organization. Other minor duties of
data administrator include; playing an assistance role by coming
up with data resources and allowing for the sharing of data
across applications as well as across departments (Tenopir et
al., 2015). Basically, Data administrators are primary deal with
data flows and data needs in an organization.
On the other hand, a database administrator is an IT officer like
individual whose primary responsibilities include; configuring
and installing databases and database management systems,
linking databases to information systems to help in application
operations, ensuring that the database management systems in
place are running optimally, checking and monitoring the
database performance. The minor duties of a database
administrator include ensuring data integrity and ensuring that
appropriate data backups are made. (Yilmaz, O'Connor &
Clarke, 2015). Basically, a database administrator is primarily
supposed to oversee running and operations of database
management systems.
I would recommend that my company hires two people, one as a
data administrator and the other as a database administrator.
The role of the data administrator will be to analyse and
organize the data while the role of the database administrator
will be to oversee the operations and functions of the database.
Database System Development Life Cycle(TBD)

6. Database Management Systems(TBD)
Advanced SQL(TBD)

7. Web and Data Warehousing and Mining in the Business
World(TBD)
References
Yilmaz, M., O'Connor, R. V., & Clarke, P. (2015). Software
development roles: a multi-project empirical
investigation. ACM SIGSOFT Software Engineering
Notes, 40(1), 1-5.
Tenopir, C., Hughes, D., Allard, S., Frame, M., Birch, B.,
Baird, L., ... & Lundeen, A. (2015). Research data services in
academic libraries: Data intensive roles for the future?. Journal
of eScience Librarianship, 4(2), 4.
Pokorný, J. (2018, March). Integration of Relational and NoSQL

8. Databases. In Asian Conference on Intelligent Information and
Database Systems (pp. 35-45). Springer, Cham.
Mabogunje, A. (2015). The development process: A spatial
perspective. Routledge.