M Flashcards
a characteristic of a relation is that rows may hold identical values
False
a characteristic of a relation is that rows may hold single values
True
The SQL keyword MODIFY is used to change the structure, properties or constraints of a table.
False
The SQL keyword CONSTRAINT is used to define one of five types of constraints.
True
The Microsoft Access 2016 application generator provides the ability to create and store forms, reports, and queries.
True
most Microsoft access 2016 commands and tools are available on the tabbed ribbon
True
Microsoft Access uses the AutoNumber data type to create surrogate keys
True
SQL commands can be embedded in an application program
True
Business Intelligence (BI) systems typically store their data in data warehouses.
True
SQL includes a data definition language, a data manipulation language, and SQL/Persistent stored modules.
True
Table names in databases usually follow a certain style
False. They can follow any style desired.
In a DB, each table stores data about a different type of thing
True
With SQL server, the preferred way to create database structures is with SQL statements
True
SQL statements can be submitted to SQL Server from Microsoft SQL Server Management Studio
True
The SQL Server GUI program is the Enterprise Manager
False. Enterprise Manager is an Oracle program I believe.
Microsoft Access 2016 DBs are stored using the file extension .accdb
True
Microsoft Access is a personal DB that combines a DBMS with an application generator
True
Microsoft Access 20– uses the Access 2003 .mdb file format as the default file format for database files.
False, regardless of version
The SQL CREATE TABLE statement is used to name a new table and describe the table’s columns.
True
Data values to be added to a table are specified by using the SQL VALUES clause.
True
Microsoft SQL Server Management Studio can be used to create a new DB
True
Purpose of a DB is to help keep track of things
True
In a DB, each table stores data about a different type of thing
True
Like a spreadsheet, a DB table has rows and columns
True
The SQL keyword SELECT is used to specify the columns to be listed in the query results
True
The SQL keyword WHERE is used to specify the table(s) that contain the data to be retrieved
False. That’s FROM
A relation is a table that has special restrictions on it
False
All relations are tables, but not all tables are relations
True
Can users ever enter numbers into an autonumber field in Access?
No
SQL, although very popular, has never become a national standard.
False
SQL statements are ended with a colon.
False. Semi-colon
IMPORTANT The WHERE clause contains the condition that specifies which columns are to be selected. IMPORTANT
FALSE.
Columns vs Rows
WHERE affect the rows, it does not affect the columns! Select affects te columns!
The clause SELECT COUNT (*) results in a table with a single row and a single column.
True
he CODASYL DBTG mode structured data relationships as a tree structure
False