Data Base Management System

A database is designed to collect and organize input data. It serves as a structured system that efficiently stores and manages large amounts of data. By organizing the data, a database allows for easy retrieval, manipulation, and analysis. Additionally, it provides a centralized location for storing data, ensuring data integrity and consistency. Therefore, the function of a database is to collect and organize input data.

The model for a record management system can include a handwritten list, a Rolodex card file, and a business form. These different options represent various ways of organizing and storing records. A handwritten list can be a simple and accessible method, while a Rolodex card file allows for easy sorting and retrieval of information. A business form provides a structured template for recording data. Therefore, all of the mentioned options can be used as models for a record management system.

All of the options mentioned (difficult to update, lack of data independence, data redundancy, program dependence) are problems commonly associated with file management systems. File management systems often make it difficult to update files, as they may require manual intervention or lack efficient methods for modifying data. Lack of data independence refers to the reliance on specific file formats or structures, making it challenging to access or use the data in different systems. Data redundancy occurs when the same data is stored multiple times, leading to wasted storage space and potential inconsistencies. Program dependence means that applications are tightly coupled with the file management system, making it difficult to switch or upgrade systems without significant changes to the programs.

The correct answer is "modify" because the command "modify" allows you to change one or more fields in a record. This command is commonly used in database management systems to update or alter the data stored in a specific record. By using the "modify" command, you can make changes to the existing values of fields within a record without needing to delete or insert a new record.

The Social Security Number can be used as a primary key in a student file because it is a unique identifier for each individual. A primary key is a field or combination of fields that uniquely identifies each record in a database table. Since each student has a unique Social Security Number, it can be used as a primary key to ensure that each record in the student file is distinct and can be easily identified.

A network structure allows a many-to-many relationship. This means that multiple entities can be connected to multiple other entities. Unlike other structures, such as hierarchical or relational structures, a network structure allows for more complex and flexible relationships between data elements. This makes it suitable for representing interconnected data in various domains, such as social networks or supply chains.

The correct answer is "multimedia". This term refers to a database management system that is capable of handling various types of data, including full text, images, audio, and video. It allows for the storage, retrieval, and manipulation of different media formats within a single system.

The correct answer is DB/DC dictionary. This software package is commonly used as a data dictionary, which is a centralized repository for storing and managing metadata about data elements in a database system. The term "DB/DC" refers to Database/Data Communications, indicating that the software is designed to handle both database management and data communication functionalities. It helps in organizing and documenting data structures, relationships, and definitions, making it easier for users to understand and work with the database system.

A transaction log is a file that contains a complete record of all activity that affected the contents of a database during a certain period of time. It is used to track and record changes made to the database, such as insertions, updates, and deletions. The transaction log is essential for ensuring data integrity and for recovering the database in the event of a failure or error. It provides a detailed audit trail of all database transactions, allowing for analysis and troubleshooting if needed.

In the DBMS approach, application programs are responsible for performing the processing functions. This includes tasks such as querying the database, manipulating data, generating reports, and executing transactions. The storage function, on the other hand, is handled by the DBMS itself, which manages the physical storage of data on disk or in memory. Access control, on the other hand, is the responsibility of the DBMS as well, as it ensures that only authorized users can access and modify the data. Therefore, the correct answer is processing functions.

Most DBMSs use Query Language to help their users access data. Query Language is specifically designed for managing and manipulating data in a database. It allows users to retrieve, insert, update, and delete data using simple and standardized commands. SQL (Structured Query Language) is the most commonly used Query Language in DBMSs. It provides a set of commands and syntax that enable users to interact with the database, making it easier to retrieve and manipulate data efficiently. Therefore, Query Language is the correct answer for this question.

The correct answer is "all of above". This means that all three options mentioned - database management system (DBMS), database processing system (DBPS), and data management system (DMS) - are correct terms used to describe a set of programs that handle a firm's database responsibilities.

In a large DBMS, each user can "see" only a small part of the entire database. This means that each user is given access to a specific portion or subset of the database, rather than having access to the entire database. This is done to ensure data security and privacy, as well as to improve performance by distributing the workload among different users. By limiting each user's visibility to only a small part of the database, the system can control and manage the access rights and permissions for each user effectively.

The correct answer is "look-up" because this is a common operation in all record management systems. Look-up refers to the process of searching for a specific record or piece of information within a database or record system. It allows users to retrieve data based on certain criteria or keywords, making it an essential operation in managing records effectively.

A record management system is designed to organize and store information in computer files. It provides a mechanism to extract or retrieve specific information from these files when needed. Therefore, it can be used to extract information stored in a computer file. The other options mentioned in the question, such as always using a list as its model or being able to handle many files of information at a time, are not necessarily true for all record management systems.