0
What else can I help you with?
A group of related fields is known as data redundancy?
This statement is incorrect. Data redundancy refers to storing the same piece of data in multiple places, leading to inefficiency and inconsistency. A group of related fields is known as a database or a record in a database.
How do you link two tables that are in the same database?
You can link them using Keys. You have different kinds of keys like Foreign key, super key etc. Foreign key - a foreign key (FK) is a field or group of fields in a database record that points to a key field or group of fields forming a key of another database record in some (usually different) table. Usually a foreign key in one table refers to the primary key (PK) of another table. This way references can be made to link information together and it is an essential part of database normalization Superkey - A superkey is defined in the relational model as a set of attributes of a relation variable (relvar) for which it holds that in all relations assigned to that variable there are no two distinct tuples (rows) that have the same values for the attributes in this set. Equivalently a superkey can also be defined as a set of attributes of a relvar upon which all attributes of the relvar are functionally dependent.
Which is the first step in Taxonomy?
The first step in taxonomy is identifying and naming organisms, assigning them to a particular group or category based on their characteristics and evolutionary relationships.
Different between distributed and decentralized on database?
Distributed database is one logical database which is spread out over multiple sites, connected by network. It behaves as it were a single database. Decentralized databases are a group of independent databases spead out over different locations. They are not connected and do not share updates between each other.
What is the components of DBMS and how they relate to each other?
DBMS architecturespecifies its components (including descriptions of their functions) and their interfaces. DBMS architecture is distinct from database architecture. The following are major DBMS components:DBMS external interfaces- They are the means to communicate with the DBMS (both ways, to and from the DBMS) to perform all the operations needed for the DBMS. These can be operations on a database, or operations to operate and manage the DBMS. For example:- Direct database operations: defining data types, assigning security levels, updating data, querying the database, etc. - Operations related to DBMS operation and management: backup and restore, database recovery, security monitoring, database storage allocation and database layout configuration monitoring, performance monitoring and tuning, etc. An external interface can be either a user interface (e.g., typically for a database administrator), or an application programming interface (API) used for communication between an application program and the DBMS. Database language engines(or processors) - Most operations upon databases are performed through expression in Database languages (see above). Languages exist for data definition, data manipulation and queries (e.g., SQL), as well as for specifying various aspects of security, and more. Language expressions are fed into a DBMS through proper interfaces. A language engine processes the language expressions (by a compiler or language interpreter) to extract the intended database operations from the expression in a way that they can be executed by the DBMS.Query optimizer - Performs query optimization on every query to choose for it the most efficient query plan (a partial order (tree) of operations) to be executed to compute the query result.Database engine - Performs the received database operations on the database objects, typically at their higher-level representation.Storage engine - translates the operations to low-level operations on the storage bits. In some references the Storage engine is viewed as part of the database engine.Transactionengine - for correctness and reliability purposes most DBMS internal operations are performed encapsulated in transactions (see below). Transactions can also be specified externally to the DBMS to encapsulate a group of operations. The transaction engine tracks all the transactions and manages their execution according to the transaction rules (e.g., proper concurrency control, and proper commit or abort for each).DBMS management and operation component - Comprises many components that deal with all the DBMS management and operational aspects like performance monitoring and tuning, backup and restore, recovery from failure, security management and monitoring, database storage allocation and database storage layout monitoring, etc.Data definition subsystemhelps the user create and maintain the data dictionary and define the structure of the file in a database.Data manipulation subsystem helps the user to add, change, and delete information in a database and query it for valuable information. Software tools within the data manipulation subsystem are most often the primary interface between user and the information contained in a database. It allows the user to specify its logical information requirements.Application generation subsystem contains facilities to help users develop transaction-intensive applications. It usually requires that the user perform a detailed series of tasks to process a transaction. It facilitates easy-to-use data entry screens, programming languages, and interfaces.Data administration subsystem helps users manage the overall database environment by providing facilities for backup and recovery, security management, query optimization, concurrency control, and change management.
What is the difference a record and a file?
A file is a collection or set of records. Typically, In database sense, A Group of records makes a file. A group of attributes makes a record.
What is a group of fields in a database called?
Any computer based database is composed of certain things in a certain order. The simplest part of a database is the field. Fields can contain pictures or text or sounds or instructions on what to do with other information in other fields. Fields are grouped into Records. Records are the total of all the information on a particular person or item. Records can be combined with other records then to build the database
What is a record in databases?
A record database is all the information dealing with one particular subject.
What is a record set object?
A record set object is a data structure that contains a group of records or rows retrieved from a database table or query result. It typically allows for iterating through the records, accessing field values, and performing operations on the data. Record set objects are commonly used in database programming to interact with and manipulate database query results.
A group of related records in a database?
tables
A group of similar records is called a field?
Actually, a group of similar records is called a database table, while a field refers to a single piece of data within a record. In a database table, each field represents a different attribute or characteristic.
What is a group of attribute or field in a database?
record
What is the difference between a file and a record?
A file record is a unique identifier, like your social security number, that will identify a particular person, object, data, etc. A field is a part of that person, object, data. For instance your SSAN is your file record, the fact that you have blue eyes is a field of you, or the charateristics of that person.
What is a group of related fields in a database called?
record.
What is system of records?
A group of records pertaining to a specific category and maintained in a computer database, spreadsheet, or program designed to house the category of records concerned. A Privacy Act System of Record is where the computer-based system of record is retrieved using personal information, example, SSN, name, date of birth, ect.
What is a tuple in a database?
An arbitrary group of fields within a database record. Usually has some meaning in the context of the record. For example a 3-tuple in an address record might be the fields that contain the first, middle and last names of the person in the address field.
What are a group of related fields in an access database such as all the contact information for an individual?
Record
