SQL Server BasicsWhat is SQL Server database?What is RDBMS?What is Normalization?Why we use Denormalization?What_is_SQL?What is PL/SQL?Difference between SQL and PL/SQLDatabase TableOne to One RelationshipOne to Many RelationshipMany to Many RelationshipMany to One RelationshipString Data TypesNumber Data TypesDate Data TypesOther Data TypesCreate DatabaseDrop DatabaseCreating and Managing Users in SQL ServerCreate TableAlter TableDrop TableConstraints in SQL serverPrimary KeyForeign KeyUnique KeyCandidate KeyComposite KeyDifference between primary key and candidate keyPrimary key and foreign key relationshipSurrogate KeyCascading Referential Integrity ConstraintsSelf Referential Integrity ConstraintsInsert into statementInsert multiple recordsUpdate statementDelete statementTruncate statementDifference between Delete and TruncateAlias in SQL ServerSelect statementSelect DistinctSelect TopSelect IntoNull Functions(ISNULL(),NULLIF(),COALESCE())Sub QueryIdentity ColumnSequence objectDifference between sequence and identity columnSQL Server ClausesWHERE ClauseOrder By ClauseTop N ClauseGroup By ClauseHaving ClauseDifference between Where and HavingSQL Server OperatorsArithmetic OperatorsComparison OperatorsLogical OperatorsBitwise OperatorsAny OperatorsAll OperatorsUnion OperatorsUnion All OperatorsDifference between Union and Union AllIntersect OperatorExcept OperatorDifference between Except and IntersectJoinsInner JoinLeft JoinRight JoinFull JoinSelf JoinCross JoinViewsWhat are views?Create views using SSMSIndexed ViewsComplex ViewsCheck Option in ViewCheck Encryption in ViewSchema Binding Option in ViewRead-only ViewsUpdatable ViewsAdvantages and disadvantages of viewsCreate multiple views on one tableCan we implement index on views?Can we Perform Insert, update, delete operation on views?Stored Procedure and FunctionsWhat are Stored Procedures?Why we use stored procedures?Passing parameters to Stored procedureUser-Defined FunctionsDifference between UDF and Stored procedurePre-Defined Functions@@Indentity and Scope_IndentityNULLIF, ISNULL and COALESCE
Previous
Next

What is Database Table?

A database table is a fundamental component of a relational database management system (RDBMS). It is a structured collection of related data organized in rows and columns. Tables are used to store and represent entities or concepts within a database.

Here are some key characteristics of a database table:

Structure: A table has a defined structure that consists of columns and rows. Each column represents a specific attribute or property of the data, while each row represents a single record or instance of the entity being represented.

Columns: Columns, also known as fields or attributes, define the types of data that can be stored in the table. Each column has a name and a specific data type, such as text, numbers, dates, or binary data. Columns can also have constraints, such as primary keys, foreign keys, and unique constraints, to ensure data integrity and enforce relationships between tables.

Rows: Rows, also referred to as records or tuples, contain the actual data values stored in the table. Each row represents a unique instance or entry in the table and contains values corresponding to the columns defined in the table structure.

Relationships: Tables in a relational database can have relationships with other tables. These relationships are established using keys, such as primary keys and foreign keys, to establish associations and dependencies between related data.

Data Integrity: Tables often have rules and constraints applied to maintain the integrity and consistency of the data. These constraints can enforce rules such as uniqueness, referential integrity, and data validation.

Data Operations: Tables allow various data operations, such as inserting new records, updating existing records, deleting records, and querying data using SQL (Structured Query Language) statements.

Indexes: Tables can have indexes defined on one or more columns to improve query performance by enabling faster data retrieval based on specific criteria.

In summary, a database table is a structured collection of related data organized in rows and columns within a relational database. It provides a way to store, organize, and manage data in a structured and efficient manner, allowing for effective data retrieval and manipulation.

Previous
Next