Describe the necessity for database constraints.
DefinitionDescription should include following:
- Recollection of data-modeling principles provides data integrity by constraining what users may input into a certain column.
- Constraints enforce rules on data in a table whenever a row is inserted, updated, or deleted from a table.
- Constraints can prevent the deletion of a table if there are dependencies from another table.
Related Standards of Learning
The student will read, interpret, analyze, and evaluate nonfiction texts.
- Analyze text features and organizational patterns to evaluate the meaning of texts.
- Recognize an author’s intended audience and purpose for writing.
- Skim materials to develop an overview and locate information.
- Compare and contrast informational texts for intent and content.
- Interpret and use data and information in maps, charts, graphs, timelines, tables, and diagrams.
- Draw conclusions and make inferences on explicit and implied information using textual support as evidence.
- Analyze and synthesize information in order to solve problems, answer questions, and generate new knowledge.
- Analyze ideas within and between selections providing textual evidence.
- Summarize, paraphrase, and synthesize ideas, while maintaining meaning and a logical sequence of events, within and between texts.
- Use reading strategies throughout the reading process to monitor comprehension.
The student will read, interpret, analyze, and evaluate a variety of nonfiction texts including employment documents and technical writing.
- Apply information from texts to clarify understanding of concepts.
- Read and correctly interpret an application for employment, workplace documents, or an application for college admission.
- Analyze technical writing for clarity.
- Paraphrase and synthesize ideas within and between texts.
- Draw conclusions and make inferences on explicit and implied information using textual support.
- Analyze multiple texts addressing the same topic to determine how authors reach similar or different conclusions.
- Analyze false premises, claims, counterclaims, and other evidence in persuasive writing.
- Recognize and analyze use of ambiguity, contradiction, paradox, irony, sarcasm, overstatement, and understatement in text.
- Generate and respond logically to literal, inferential, evaluative, synthesizing, and critical thinking questions about the text(s).
The student will write program specifications that define the constraints of a given problem.