CSC 103 Databases Overview
- 1. Databases CSC 103 Intro to Computing
- 2. What is a Database? a collection of information that is organized so that it can easily be accessed, managed, and updated. databases typically contain collections of data records or files, such as sales transactions, products, supplies, inventory, customer/client profiles, employees, patients, students, etc.
- 3. What databases do you personally manage? Emails Files on a computer, music, pictures, movies Online shopping (Amazon) Web searching (Google) Research (Library – research papers) Any collection of info that you need to sort through and locate items
- 4. How is information organized in a database? By fields (also called columns) Fields are the categories or criteria, by which all information is organized and categorized Fields for students may include: student ID, SSN, lastname, firstname, middle name, birthdate, address (street, city, state, county), email, phone, major, grades, credits, financial info, etc.
- 5. What Databases are you a part of? Facebook – you supply information Google – your information is captured Any website where you register and log-in to with an email or password (Devices) Student database at WCCC, MyWarren Government, State, Utilities, Healthcare Banking, Credit – any correspondence you get (emails, junk mail, ads)
- 6. How are you identified in a database? Email, username, password (logins), + security verifications Name, DOB or Age, Social Security Number, ID Numbers, Account Numbers, Phone Number(s), Address, Vehicle Vin #, etc.
- 7. Where are databases stored? Business store their data on Database servers Databases and database managers are prevalent in large mainframe systems, but are also present in smaller distributed workstation and mid-range systems such as the AS/400 and on personal computers (Access). SQL (Structured Query Language) is a standard language for making interactive queries from and updating a database such as IBM's DB2, Microsoft's SQL Server, and database products from Oracle, Sybase, and Computer Associates.
- 8. How Databases work on the Web
- 9. What operations can be performed on a DB? CRUD - Create, Read, Update, Delete Collect and store data, View data Find data, Update data Organize data, Sort & Filter data, Distribute data, Move or remove data
- 10. Databases are constructed of tables: A table is simply tabular information organized in a grid of rows and columns. Employees db for WCCC may have these tables: • Faculty • Adjunct Faculty • Administration • Staff Each group (above) in its own table.
- 11. Fields & Records (Example Datasheet View in Access) Fields (columns)Records (rows) Table
- 12. Fields & Records (Design View in Access) Fields Field Properties (limitations or format)
- 13. What software on a PC can manage databases? Access – (part of Microsoft Office Suite) is designed to create and manage databases We can begin by exploring some basic operations of Access (sorting, filtering, advanced filters) using Microsoft Access and database files presidents.accdb and countries.accdb
- 14. How is information retrieved? Display all – SELECT * FROM (tablename) Sort – displays information in ascending, descending order (based on a field) Filter – limits the display of information through specific criteria Query – retrieve and store information based on specific criteria
- 15. phpMyAdmin phpMyAdmin – (web-based tool) is used to create, edit and manage databases stored on a web server. Web pages use php (server side code) to store or retrieve data from the database Uses SQL language to retrieve, filter, display information from the database SQL stands for structured query language
- 16. phpMyAdmin Interface Tables of world Database Country
- 17. Column or Field Design
- 18. Running an SQL Query To retrieve info from DB
- 19. Results of SQL Query