Create A Database Of The Information In The Attached Text Fi

Create A Database Of The Information In The Attached Text File Of Tagl

Create a database of the information in the attached text file of taglines from the Internet Movie Database. You can find information on JDBC on the wiki Note that at this point you probably need to explicitly provide the classpath for BOTH compilation and running the Java Virtual Machine javac -classpath "./:/opt/lablibs/ojdbc6.jar" DBCon.java java -classpath "./:/opt/lablibs/ojdbc6.jar" DBCon Take the following steps: - Connect to the database using JDBC - Create two tables (see below) using createUpdate statements - Open the text file for reading (see notes on file storage from CSci 160) - Read in line by line - As you are parsing the text don't worry too much about special cases: It is fair to assume that any movie title begins after the "#" and ends before the first "(" and that the movie year consists of the 4 digits after the first "(". If there are movies for which those 4 characters don’t form an integer you can ignore the corresponding record. - As you parse the input, insert records into both tables using createUpdate - Create a query that does a natural join of the two tables using createQuery - Print the first 20 lines of the result to standard output Because the taglines are multi-valued you need two tables. The first table, Movie, has the following attributes - iD is an integer that is automatically generated in your Java code (or using a sequence in Oracle), and serves as primary key - movieName - movieYear The second table, Tagline has the attributes - movieID which is a foreign key that references iD in Movie - tLine holds the actual tagline Both attributes together form the primary key. Submit - your java file - the typescript file that was created when running the program, which has to include the 20 lines of output - a text file containing one paragraph on how you approached the problem and what you learned (for this assignment one paragraph is enough and you don't need an entire page as listed in the syllabus) I will include the web page containing the database with the login info after we handshake.

Paper For Above instruction

The task of creating a database from a text file containing movie tags requires a systematic approach to effectively parse the data, design the database schema, establish a connection to the database using JDBC, and perform data insertion and retrieval. This process involves multiple steps that ensure data integrity and facilitate efficient querying.

First, establishing a connection to the database using JDBC is crucial. The Java program must correctly set the classpath to include the Oracle JDBC driver, such as ojdbc6.jar, to enable communication between Java and the database. Using the DriverManager class, the program connects with the database credentials provided via a secure web interface. Handling exceptions such as ClassNotFoundException and SQLException ensures robustness in establishing the connection.

Next, creating the appropriate database schema involves defining two tables, Movie and Tagline, with specified attributes and primary-foreign key relationships. The Movie table includes an auto-incrementing primary key (ID), movieName, and movieYear. The Tagline table includes movieID as a foreign key referencing Movie(ID), and tLine for the tagline. Both tables' primary keys must be unique and enforce referential integrity. SQL statements for creating these tables typically include constraints for primary and foreign keys, ensuring data consistency.

Reading the input file line by line requires careful handling to parse each record accurately. According to the provided assumptions, each movie title appears after "#" and before the first "(", and the year follows the first "(" with four digits. The parser extracts these elements using string operations such as indexOf and substring. For movies with malformed or missing year data, the program should skip those records to maintain data quality.

As each line is parsed, the program inserts data into the database tables using prepared statements or createUpdate methods to prevent SQL injection and maintain efficiency. The movieName and movieYear are inserted into the Movie table, with the generated ID retrieved after insertion. Then, for each tagline associated with that movie, a record is inserted into the Tagline table with the corresponding movieID and tagline text.

After populating the tables, a natural join query retrieves combined data from both tables, enabling the extraction of movie titles, years, and associated taglines. The program executes this query and processes the ResultSet to output the first 20 lines, providing an overview of the data extracted and stored.

In conclusion, this project exemplifies the integration of data parsing, database schema design, JDBC connectivity, and query execution. I learned how to handle string manipulation effectively, manage database transactions, and ensure data consistency throughout the process. The experience highlighted the importance of error handling, adhering to database constraints, and verifying data integrity through testing and debugging.

References

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