Numeric Data Types in MySQL

What is the responsibility of a database administrator?

What does the storage manager do in a database system?

What is the role of the query processor in a database system?

What does the transaction manager ensure in a database system?

What does logical design convert ER models to?

Which notation uses circles, lines, and three lines to represent cardinality?

What are primary keys in a database?

What does normalization aim to eliminate?

What do indexes help improve in a database?

Which type of index uses different methods to store data?

What does physical design specify in a database?

What does a storage engine translate query instructions into?

What does Crow's foot notation use to represent cardinality?

'What eliminates redundancy by decomposing a table into smaller ones?'

'What type of key is unique and minimal?'

'What concept in database design involves dependency and redundancy?'

Which SQL statement deletes all rows from a table?

What type of key is used to uniquely identify rows in a table?

Which SQL operator matches text against a pattern using wildcard characters %?

What does the UPDATE statement do in SQL?

Which type of column is assigned incrementing values when new rows are inserted?

Which SQL keyword is used to enforce referential integrity?

What type of functions process values from a set of rows and return summary values?

What clause in SQL orders rows by one or more columns?

What is the purpose of the BETWEEN operator in SQL?

What does the TRUNCATE statement do in SQL?

What type of functions return the absolute value, convert to lowercase, and trim white spaces?

Which SQL keyword is used to create rules governing allowable values in a database?

Which clause is used with the GROUP BY clause to filter group results?

What is a temporary name assigned to a column or table using the AS keyword?

Which join selects only matching rows from the tables being joined?

What is used to process all rows that satisfy the WHERE clause condition in a SELECT statement?

Which type of join compares columns with the = operator and is the most common type of join?

What is a stored view that must be refreshed when the base table changes?

What involves creating entities, relationships, and attributes, determining cardinality, and creating supertype and subtype entities?

Which refers to relationship maxima and minima in an entity-relationship model?

What kind of entity is a subset of another entity type called the supertype entity?

What type of join combines tables without comparing columns using a CROSS JOIN clause?

What adds indexes and specifies table organization on storage media?

What is a high-level representation of data requirements, including entities, relationships, and attributes?

What is the responsibility of the transaction manager?

Which database is open-source and falls under NoSQL category?

What does the logical design phase do in the context of database design?

What is the purpose of an API in the context of SQL?

What is a tuple in the context of databases?

How is SQL divided into sublanguages?

What does data independence allow database administrators to do?

What does the CREATE TABLE statement do in SQL?

What is the main purpose of the DROP TABLE statement in SQL?

What does the ALTER TABLE statement do in SQL?

What are common integer data types in SQL?

Database administrators are responsible for creating database applications

Database systems do not authorize individual users to access specific data

Query processors do not perform query optimization to ensure efficient instructions are executed on the data

The storage manager does not use indexes to quickly locate data in databases

Arithmetic operators include addition, subtraction, multiplication, division, modulo, and exponentiation.

The TRUNCATE statement is similar to the DELETE statement without a WHERE clause.

The MERGE statement selects data from a source table and updates it in a target table.

Auto-increment columns are assigned decrementing values when new rows are inserted.

Constraints are rules governing allowable values in a database, enforced with SQL keywords in ALTER TABLE statements.

The LIKE operator matches text against a pattern using wildcard characters *.

Aggregate functions process values from a set of rows and return summary values, including COUNT, MIN, MAX, SUM, and AVG.

The BETWEEN operator determines if a value falls between two other values.

The ORDER BY clause orders rows by one or more columns, and ASC orders in ascending order.

Primary keys consist of one or more columns used to uniquely identify rows in a table.

The UPDATE statement modifies existing rows in a table using the SET clause and an optional WHERE clause.

Foreign keys reference primary keys of other tables, and the database enforces referential integrity.

Logical design converts ER models to database tables and keys

Crow's foot notation uses circles, lines, and three lines to represent cardinality

Intangible entities are not tracked with data in the database

Primary keys are stable, simple, meaningless, and unique identifiers

Functional dependence and redundancy are concepts in database design

A candidate key is a simple or composite column that is unique and minimal

Normalization eliminates redundancy by decomposing a table into smaller ones

Explore different table structures like heap, sorted, hash, and table clusters

Indexes help improve query performance by providing faster access to data

Bitmap indexes and hash indexes are types of indexes that use different methods to store data

Physical design specifies indexes, table structures, and partitions, affecting query performance

A storage engine translates query instructions into low-level commands to access data

Aggregate functions, such as COUNT and SUM, are used in a SELECT clause to process all rows that satisfy the WHERE clause condition

The HAVING clause is optional and is used with the GROUP BY clause to filter group results

A join is used in a SELECT statement to combine data from two tables based on common columns

Column names can be replaced with aliases for easier referencing

Join clauses determine how unmatched rows are handled, with INNER JOIN selecting only matching rows and FULL JOIN selecting all rows

An equijoin is a join that compares columns with the = operator and is the most common type of join

Self-joins join a table to itself, and cross-joins combine tables without comparing columns using a CROSS JOIN clause

An alias is a temporary name assigned to a column or table using the AS keyword

A materialized view is a stored view that must be refreshed when the base table changes

Entity-relationship modeling is a high-level representation of data requirements, including entities, relationships, and attributes

An entity can be a person, place, concept, or activity, and a relationship is a statement about entities

An attribute is a descriptive property of an entity, and types and instances are elements of their respective sets

An API is used to simplify SQL implementation with general-purpose languages.

The CREATE TABLE statement builds a new table with specified columns and data types.

In SQL, a table consists of a name, a fixed sequence of columns with unique names and data types, and a varying set of rows with unnamed tuples of values.

Physical design adds indexes and optimizes table storage.

The logical design phase converts entities, relationships, and attributes into tables, keys, and columns.

A tuple is an ordered collection of elements, while a cell is a single column of a single row.

SQL is divided into five sublanguages: Data Definition Language (DDL), Data Query Language (DQL), Data Manipulation Language (DML), Data Control Language (DCL), and Data Transaction Language (DTL).

Common integer data types in SQL include INT (4 bytes) and SMALLINT (2 bytes), with variations representing different sizes of integer values.

Data independence is a principle that allows database administrators to optimize data storage without affecting query results.

The ALTER TABLE statement modifies the structure of an existing table.

The transaction manager is responsible for preventing conflicts between concurrent transactions and stepping the database back to a consistent state in case of failure.

MongoDB is an open-source NoSQL database, while SQL supports creating and manipulating tables with statements like INSERT, SELECT, UPDATE, DELETE, and CREATE TABLE.

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